Specifications

sigmadue - IEC 61131-3 Function Block Library
134
Rerefence
table
Input
Output
Input Description
SEQ
Value from 1 to what specified as NR_CMD for the
MB_MST_Sync function block (max. 255)
NODE 0... 247
MB_FUNC 6 or 16, in according to the Modbus Specifications
ID_REG 1... 65535
NR_REG 1... 16
T_OUT 1... 65535. Deafult value 10 (1000 ms)
RETRY 1... 255. Deafult value 1
Label Description
MB_STS
0 = No operation / OK
1 = Transaction in progress
2 = Data available
3 = Timeout expired
4 = Agent error event
MB_OPRS
0 = No operation / OK
1 = Port not available
2 = Timeout expired
4 = CRC error
16 = ExCode error