How to write a specific COM connection?

Question

Hello I'm working with a measurement system (CL-200) and want to controll it with my computer. So I connected it with the standart connection (BaudRate DataBits StopBits Parity) but the original software that I don't want to use sets the device in a PC mode. Only in this mode I can get answer with my Code requests. So how do I set the needed values like this Software? Cause with my connection the device isn't in a Pc mode. Here is a communication log from the software I want to emulate: 0 IRP_MJ_CREATE DOWN TRUE 0x0 43 00 4C 00 53 00 31 00 77 00 2E 00 65 00 78 00 65 00 00 00 C.L.S.1.w...e.x.e... 1 IRP_MJ_CREATE UP FALSE 0x0 2 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_BAUD_RATE: Retrieve Baud Rate) DOWN FALSE 0x0 3 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_BAUD_RATE: Retrieve Baud Rate) UP TRUE 0x0 80 25 00 00 €%.. 4 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_LINE_CONTROL: Retrieve line control) DOWN FALSE 0x0 5 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_LINE_CONTROL: Retrieve line control) UP TRUE 0x0 00 00 08 ... 6 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_CHARS: Retrieve special characters) DOWN FALSE 0x0 7 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_CHARS: Retrieve special characters) UP TRUE 0x0 1A 00 00 1A 11 13 ...... 8 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_HANDFLOW: Retrieve handshake information) DOWN FALSE 0x0 9 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_HANDFLOW: Retrieve handshake information) UP TRUE 0x0 00 00 00 00 00 00 00 00 19 00 00 00 19 00 00 00 ................ 10 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_BAUD_RATE: Retrieve Baud Rate) DOWN FALSE 0x0 11 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_BAUD_RATE: Retrieve Baud Rate) UP TRUE 0x0 80 25 00 00 €%.. 12 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_LINE_CONTROL: Retrieve line control) DOWN FALSE 0x0 13 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_LINE_CONTROL: Retrieve line control) UP TRUE 0x0 00 00 08 ... 14 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_CHARS: Retrieve special characters) DOWN FALSE 0x0 15 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_CHARS: Retrieve special characters) UP TRUE 0x0 1A 00 00 1A 11 13 ...... 16 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_HANDFLOW: Retrieve handshake information) DOWN FALSE 0x0 17 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_HANDFLOW: Retrieve handshake information) UP TRUE 0x0 00 00 00 00 00 00 00 00 19 00 00 00 19 00 00 00 ................ 18 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_BAUD_RATE: Set baud rate) DOWN TRUE 0x0 80 25 00 00 €%.. 19 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_BAUD_RATE: Set baud rate) UP FALSE 0x0 20 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_RTS: Set RTS) DOWN FALSE 0x0 21 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_RTS: Set RTS) UP FALSE 0x0 22 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_DTR: Set DTR) DOWN FALSE 0x0 23 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_DTR: Set DTR) UP FALSE 0x0 24 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_LINE_CONTROL: Set line control) DOWN TRUE 0x0 00 02 07 ... 25 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_LINE_CONTROL: Set line control) UP FALSE 0x0 26 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_CHARS: Set special characters) DOWN TRUE 0x0 1A 00 00 1A 11 13 ...... 27 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_CHARS: Set special characters) UP FALSE 0x0 28 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_HANDFLOW: Set handshake information) DOWN TRUE 0x0 01 00 00 00 40 00 00 00 19 00 00 00 19 00 00 00 ....@........... 29 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_HANDFLOW: Set handshake information) UP FALSE 0x0 30 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_TIMEOUTS: Set timeouts) DOWN TRUE 0x0 FF FF 00 00 01 00 00 00 2C 01 00 00 00 00 00 00 00 00 00 00 ÿÿ...... ........... 31 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_TIMEOUTS: Set timeouts) UP FALSE 0x0 32 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_PURGE: Purge requests) DOWN TRUE 0x0 0C 00 00 00 .... 33 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_PURGE: Purge requests) UP FALSE 0x0 34 IRP_MJ_WRITE DOWN TRUE 0x0 02 39 39 35 34 31 20 20 20 03 31 33 0D 0A .99541 .13.. 35 IRP_MJ_WRITE UP TRUE 0x0 02 39 39 35 34 31 20 20 20 03 31 33 0D 0A .99541 .13.. 36 IRP_MJ_READ DOWN FALSE 0x0 37 IRP_MJ_READ UP FALSE 0x102 And here is the log of my current connection: 0 IRP_MJ_CREATE DOWN TRUE 0x0 53 00 65 00 72 00 69 00 61 00 6C 00 50 00 6F 00 72 00 74 00 20 00 54 00 65 00 72 00 6D 00 69 00 6E 00 61 00 6C 00 2E 00 76 00 73 00 68 00 6F 00 73 00 74 00 2E 00 65 00 78 00 65 00 00 00 S.e.r.i.a.l.P.o.r.t. .T.e.r.m.i.n.a.l...v.s.h.o.s.t...e.x.e... 1 IRP_MJ_CREATE UP FALSE 0x0 2 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_PROPERTIES: Retrieve COM properties) DOWN FALSE 0x0 3 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_PROPERTIES: Retrieve COM properties) UP TRUE 0x0 40 00 02 00 01 00 00 00 00 00 00 00 00 10 00 00 00 10 00 00 00 00 02 00 06 00 00 00 CB 01 00 00 7F 00 00 00 70 6B 06 00 0F 00 07 1F 00 00 00 00 64 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 @...........................Ë......pk..........d............... 4 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_MODEMSTATUS: Retrieve modem status) DOWN FALSE 0x0 5 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_MODEMSTATUS: Retrieve modem status) UP TRUE 0x0 30 00 00 00 0... 6 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_BAUD_RATE: Retrieve Baud Rate) DOWN FALSE 0x0 7 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_BAUD_RATE: Retrieve Baud Rate) UP TRUE 0x0 B0 04 00 00 °... 8 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_LINE_CONTROL: Retrieve line control) DOWN FALSE 0x0 9 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_LINE_CONTROL: Retrieve line control) UP TRUE 0x0 00 00 07 ... 10 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_CHARS: Retrieve special characters) DOWN FALSE 0x0 11 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_CHARS: Retrieve special characters) UP TRUE 0x0 00 00 00 00 00 00 ...... 12 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_HANDFLOW: Retrieve handshake information) DOWN FALSE 0x0 13 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_HANDFLOW: Retrieve handshake information) UP TRUE 0x0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 14 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_BAUD_RATE: Retrieve Baud Rate) DOWN FALSE 0x0 15 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_BAUD_RATE: Retrieve Baud Rate) UP TRUE 0x0 B0 04 00 00 °... 16 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_LINE_CONTROL: Retrieve line control) DOWN FALSE 0x0 17 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_LINE_CONTROL: Retrieve line control) UP TRUE 0x0 00 00 07 ... 18 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_CHARS: Retrieve special characters) DOWN FALSE 0x0 19 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_CHARS: Retrieve special characters) UP TRUE 0x0 00 00 00 00 00 00 ...... 20 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_HANDFLOW: Retrieve handshake information) DOWN FALSE 0x0 21 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_HANDFLOW: Retrieve handshake information) UP TRUE 0x0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 22 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_BAUD_RATE: Set baud rate) DOWN TRUE 0x0 80 25 00 00 ?%.. 23 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_BAUD_RATE: Set baud rate) UP FALSE 0x0 24 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_CLR_RTS: Clear RTS) DOWN FALSE 0x0 25 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_CLR_RTS: Clear RTS) UP FALSE 0x0 26 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_CLR_DTR: Clear DTR) DOWN FALSE 0x0 27 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_CLR_DTR: Clear DTR) UP FALSE 0x0 28 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_LINE_CONTROL: Set line control) DOWN TRUE 0x0 00 02 07 ... 29 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_LINE_CONTROL: Set line control) UP FALSE 0x0 30 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_CHARS: Set special characters) DOWN TRUE 0x0 1A 3F 3F 1A 11 13 .??... 31 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_CHARS: Set special characters) UP FALSE 0x0 32 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_HANDFLOW: Set handshake information) DOWN TRUE 0x0 00 00 00 00 04 00 00 00 19 00 00 00 19 00 00 00 ................ 33 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_HANDFLOW: Set handshake information) UP FALSE 0x0 34 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_BAUD_RATE: Retrieve Baud Rate) DOWN FALSE 0x0 35 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_BAUD_RATE: Retrieve Baud Rate) UP TRUE 0x0 80 25 00 00 ?%.. 36 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_LINE_CONTROL: Retrieve line control) DOWN FALSE 0x0 37 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_LINE_CONTROL: Retrieve line control) UP TRUE 0x0 00 02 07 ... 38 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_CHARS: Retrieve special characters) DOWN FALSE 0x0 39 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_CHARS: Retrieve special characters) UP TRUE 0x0 1A 3F 3F 1A 11 13 .??... 40 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_HANDFLOW: Retrieve handshake information) DOWN FALSE 0x0 41 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_GET_HANDFLOW: Retrieve handshake information) UP TRUE 0x0 00 00 00 00 04 00 00 00 19 00 00 00 19 00 00 00 ................ 42 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_BAUD_RATE: Set baud rate) DOWN TRUE 0x0 80 25 00 00 ?%.. 43 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_BAUD_RATE: Set baud rate) UP FALSE 0x0 44 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_CLR_RTS: Clear RTS) DOWN FALSE 0x0 45 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_CLR_RTS: Clear RTS) UP FALSE 0x0 46 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_CLR_DTR: Clear DTR) DOWN FALSE 0x0 47 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_CLR_DTR: Clear DTR) UP FALSE 0x0 48 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_LINE_CONTROL: Set line control) DOWN TRUE 0x0 00 02 07 ... 49 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_LINE_CONTROL: Set line control) UP FALSE 0x0 50 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_CHARS: Set special characters) DOWN TRUE 0x0 1A 3F 3F 1A 11 13 .??... 51 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_CHARS: Set special characters) UP FALSE 0x0 52 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_HANDFLOW: Set handshake information) DOWN TRUE 0x0 00 00 00 00 04 00 00 00 19 00 00 00 19 00 00 00 ................ 53 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_HANDFLOW: Set handshake information) UP FALSE 0x0 54 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_CLR_DTR: Clear DTR) DOWN FALSE 0x0 55 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_CLR_DTR: Clear DTR) UP FALSE 0x0 56 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_TIMEOUTS: Set timeouts) DOWN TRUE 0x0 FF FF FF FF FF FF FF FF FE FF FF FF 00 00 00 00 00 00 00 00 ÿÿÿÿÿÿÿÿþÿÿÿ........ 57 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_TIMEOUTS: Set timeouts) UP FALSE 0x0 58 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_WAIT_MASK: Set current event mask) DOWN TRUE 0x0 FB 01 00 00 û... 59 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_WAIT_MASK: Set current event mask) UP FALSE 0x0 60 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_QUEUE_SIZE: Set queue size) DOWN TRUE 0x0 00 10 00 00 00 08 00 00 ........ 61 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_SET_QUEUE_SIZE: Set queue size) UP FALSE 0x0 62 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_WAIT_ON_MASK: Wait for event) DOWN FALSE 0x0 See mine is so much different than the connection I want to have. Thanks for answers

Sascha B · Answer

Yeah that's the point. I don't see it too. But maybe it is only a look-a-like Hexcode cause this desvice also has a print option(button) and with this I can send a Hexcode to the printer or pc. And it looked like this: [...]35 36 32 2B 38[...] in words: 5628. So I had to cross out the number 3 as the first number and 2B was declined as a comma. Today I will make some other sniffer trys so that I'll have more code comparison. And thanks for your effort! This thread can be closed! Cause there are other problems in my way now...

Sam Hobbs · Answer

I don't see the connection either. I used the following code to convert the hex and the string I got from this does not make sense. The 0D 0A at the end of the hex implies that the hex data reprensents text but there are non-text characters in the hex data. It really does not make sense. String s = 02 30 31 30 31 30 20 32 30 2B 38 37 38 39 33 2B 38 38 39 37 33 2B 36 36 35 30 33 03 30 43; String[] sa = s.Split(' '); foreach (string x in sa) { int Decimal = Convert.ToInt32(x 16); Console.Write(Char.ConvertFromUtf32(Decimal)); } Console.WriteLine(); }

Sascha B · Answer

Yeah sorry for my bad english. The values on the right side are the values that I can see on my measurement's display. And the Hexcode is the log from my COM sniffer. But I don't see the connection between the Hexcode and the display's values.

Sam Hobbs · Answer

I am sorry but I don't understand  the lines between them . What part do you need to get? Do you need to convert the Hexcode or do you need to get the measurement values on the right?

Sascha B · Answer

ok I had to send a special Code that checks the heads. And now the device is in the Pc Mode So but now I have a problem with the code. I compared 5 different color measurements and this is the result. on the left side is the Hexcode and on the right side the result of my measurement. But I cannot the the lines between them... 02 30 31 30 31 30 20 32 30 2B 38 37 38 39 33 2B 38 38 39 37 33 2B 36 36 35 30 33 03 30 43 0D 0A X = 882.6 02 30 31 34 35 31 20 32 30 34 34 33 45 31 32 43 34 34 34 35 43 32 34 46 33 34 34 32 34 32 37 38 46 03 36 41 0D 0A Y = 886.5 Z = 691.3 02 30 31 30 31 30 20 32 30 2B 37 37 39 36 33 2B 37 38 38 33 33 2B 35 35 35 32 33 03 30 35 0D 0A X = 793.8 02 30 31 34 35 31 20 32 30 34 34 32 43 34 41 41 36 34 34 34 36 31 44 32 44 34 34 30 43 33 44 35 38 03 36 42 0D 0A Y = 797.5 Z = 590.9 02 30 31 30 31 30 20 32 30 2B 37 36 30 34 33 2B 37 36 38 30 33 2B 35 32 38 33 33 03 30 39 0D 0A X = 777.1 02 30 31 34 35 31 20 32 30 34 34 32 38 46 43 31 37 34 34 34 31 41 31 33 30 34 34 30 37 37 45 31 41 03 36 41 0D 0A Y = 779.4 Z = 570.9 02 30 31 30 31 30 20 32 30 2B 37 33 30 39 33 2B 37 33 37 30 33 2B 34 39 38 36 33 03 30 34 0D 0A X = 770.7 02 30 31 34 35 31 20 32 30 34 34 32 38 30 33 31 39 34 34 34 30 30 30 30 30 34 34 30 34 31 34 44 42 03 31 32 0D 0A Y = 772.8 Z = 556.6 02 30 31 30 31 30 20 32 30 2B 38 37 30 31 33 2B 38 38 30 36 33 2B 36 35 36 36 33 03 30 32 0D 0A X = 740.8 02 30 31 34 35 31 20 32 30 34 34 32 31 45 33 30 44 34 34 33 38 34 30 35 35 34 33 46 39 35 31 30 30 03 36 32 0D 0A Y = 741.6 Z = 525.4

Sam Hobbs · Answer

First please understand that the term COM is usuall used to refer to COM objects or COM components; not serial communications so the term is misleading. Yes COM also refers to serial communications ports but it is more useful to say serial commun ications instead of COM. Also the term PC Mode is not a Windows term or a traditional serial communications term; at least not that I am aware of. PC Mode probably is essentially unique to the software you are using so probably you must refer to the software documentation to determine what the parameters are.