Serial Interface (RS-422/485)
Connect main module to controller by RS-422/485 for communication.
IV. Feature
Item Contents
Protocol
Half Duplex, 5wires
Synch. Asynchronous
Communication
Distance
About 500M
Type of Connection
1:N(N
≤
31)
Control Code
ASCII Code or HEXA Code
Baud Rate
9600, 19200, 38400, 57600, 76800, 115200bps
Data Bit
7,8bit
Parity Bit
None, Odd, Even Parity
Data Type
Stop Bit
1,2bit
V.
COM2 RS-422/485 Connector Pins and Signals
Pin
Number
Type
Signal Direction
Contents
1
RDA(RD+)
RS422Data Receive (+)
9Pin Female
4
RDB(RD-)
RS422Data Receive (-)
5
SG
RS422Signal Ground
6
SDA(SD+)
RS422Data Send (+)
9
SDB(SD-)
RS422Data Send (-)