
http://www2.merrick-inc.com/mct/GCMModbus.pdf Page 2 2014-05-18/Lars
Setting the GCM communications parameters
Set up the serial port in TMCI page X (Type PX<Enter>). Select which of the two serial ports (port
1 or 2) you will use. Port 1 is normally used for a user interface. Rotate between ports using
X<Enter>.
PX, TMCI Port Settings Screen
Protocol Selector. 1 for Modbus ASCII, 2 for Modbus RTU
Last and currently used protocol. Unchanged until you restart the port.
Index of the baud rate used:
0 300
1 1200
2 2400
3 4800
4 9600
5 19200
6 38400
7 57600
8 115200
9 230400
Set to the highest baudrate supported by the Modbus master and all slaves. Use
6, 34800 baud for Anybus Communicators.
BLT>
PX X: Port 2 (UART1) settings
A: NewProt 2|LastProt 2|B: BdIdx 5|C: LnPar 0x03|
MB RTU | MB RTU | 19200 | |
En:WProt 0x0BFF|WOrder 0x0000|IntFra 0x0000|
Fn:Tag 1 0|Tag 2 0|Tag 3 0|Tag 4 0|Tag 5 0
Protocol |1: Unit Addr|2: Map Size|3: Max Time|4: LRC
Gn:All Modbus | 1| 1| 10.00|
Hn:DF-1 | 0| 1| 10.00| 0
In:CITMaster | 49| | 2.00|
Jn:UISServer | 1| | 20.00|
Kn:Scalenet | 49| 1| 10.00|
Scalenet Spec| Start Char| End Char| No Powup Hnd|
|L: 0x0A|M: 0x0D|N: 1|
Mon Period ms|O: 500| | |
R: Restart port
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