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jyoon

Hi, @LeTomas Thank you very much for your help. I followed it and everything is working fine now. Jung

jyoon

Hi, I am trying to connect TM172DCL (Display for M172) but I keep getting Modbus Comm error. Current Setting: 1. I am using RS485-2 as a Modbus Master on M172. 2. Created a Generic Modbus Device for TM172DCL. 3. Since they both have the same power source, I left ground disconnected. 4. Installed 120 ohm to TM172DCL. Maybe I need to install 120 ohm on M172 as well? Can you tell me what I am doing wrong? I need to be able to exchange variables between them but It seems that RS485-2 link on M172 is dead. Thank you for your help! Jung

jyoon · ‎2020-06-09

Thank you. I disconnected it now but had it connected before. Do you think this may have made the equipment inoperarable? I attached screetshots for configuration of Modbus Slave. Do I need to have programming file as well? I don't think I am establishing the serial connection at all. Thank you.

jyoon · ‎2020-06-08

Now we changed it to Modbus. RS485-2 +, - and ground are connected with COM address of 10. I am having trouble opening up the document link. Do you have any wiring diagram as well? I believe I need to install a resistor/resistors at a terminal device but I wasn't sure. Currently, we only have two devices. We have M172 on one end and SER8300 on the other. So do I need to install resistor on both ends? Thank you very much for your help!

jyoon · ‎2020-06-04

We are trying to connect M172 and SER8300 over BACNET MS/TP using Machine Expert HVAC. How can we read the anlaog values (Temp and Humidity, etc) using M172 from SER8300? Currently, SER8300 is connected to M172 RS485-1 (BACNET MS/TP). We already changed COM (MAC) value from 254 to 10. Thank you very much for your help!

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About jyoon

Re: M172 and SER8300 integration over BACNET MS/TP

Re: Communication between M172 and TM172DCL

Communication between M172 and TM172DCL

Re: M172 and SER8300 integration over BACNET MS/TP

Re: M172 and SER8300 integration over BACNET MS/TP

M172 and SER8300 integration over BACNET MS/TP

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