9
2.2 Setting PLC communication parameters
Connect to PLC using Winproladder (24MC in this example) and change the PORT 3 communication
parameters of Winproladder. The communication parameters of 1HLC are fixed as follow:
PORT
Connection
speed
Parity bit
Data bit
Stop bit
format
Port3
19200
No
8
1
RTU
2.3 Ladder diagram programming
1. Establish FUN150 in the ladder diagram of Winproladder and use FUN150 Modbus to transmit data
from 1HLC.
Use X0 to control M102 and X1 to control M103 because M102 is the zero-point calibration control
coil (000513) and M103 is the full-span calibration control coil (000514) from the Modbus Master
table in step 2.
2. Register addresses to be read or written are set in the Modbus Master table; for the register
addresses of the slave please refer to
【
1.5.1 Application interface contents and Modbus
comparison table
】
.
