Just trying out T10 stat reading values from AQ-N via modbus. Can someone tell me what the keywords are for all the different types of modbus registers?
I don’t want to do this via bacnet as yet, would like to stick with modbus.
As far as I know the temperature value etc, are not readable with keyword MB_REG as I get no value from that.
Or am i missing something.
So I have a T10 which I am talking to via MODBUS because that is usable in T3000 to program etc, and MODBUS to AQ-N stat. I have them both visible in T3000 and I can see the values, but program wise, how do I read/write to the AQ-N?
I can see the register list in view registers, and can see all the values there, but something either wrong with my syntax for MB_REG or there is another keyword to get at the 30000 registers.
To integrate by modbus:
Check out the T3000 → tools → register viewer, there you can see all the registers, data structure, descriptions and current value.
I’ll suggest that you could set the protocol to Bacnet, that way you dont have to deal with a big modbus register list and converting the various modbus data structures.
Set the device to bacnet first, then the master controller (Tstat10 I assume) to bacnet afterwards. Once a subnet device is set to bacnet it will start sending out a lot of traffic and if there are any other modbus devices on that subnet they will be blocked.
Ya I can use bacnet but that stinks to make programming changes. Unless I am wrong you can’t edit programs while in bacnet mstp mode.
I can see the register list, what I am looking for is what are the keywords?
Mb_reg…
What others?
Can we do concatenation for reading data e.g. I want to read data using mod-bus TCP and I want to use ip as a variable like → “201.1.MB_DISINPUT21”
Instaed of “201” I want to use variable for it like “IP.1.MB_DISINPUT21”
Thanks Fance, but this will not work for me, I have 4 3rd party devices and I want to read data from them over tcp. I just want to make their IPs change able.
For network modbus/TCP point, format is xx.yy.MB_REGzz.
XX → the last byte of ip address. for example, 192.168.0.100. xx is 100.
YY → RTU/RS485 subnet modbus id of device.
ZZ → Register you want to read or write.