User`s manual

SH-300 Text Panel
Page 74 of 103
4.13 Emerson EC20 Series
SH-300 can communicate with Emerson EC20 series PLC, before communication with SH-300
PLC need to be configured .setup port0 of PLC as Modbus communication protocol.
SH-300 software configuration:
Item Content
SH-300 COM port 9 pin COM port
PLC COM port Programming port
Default parameter 19200bps、8bits、1stop、Even
Station No. 0－255，1 is Windows default
Distance (Max.) 15m
Communication mode RS232
Cable type Special cable
Inner relay address M0-M1999 Y0-Y377(O)
Register address D0-D7999 T0-T255
Please consult Emerson PLC user manual for particular address
Connection guidance of Special cable
2 RXD 4RXD
SH-300 side
3 TXD 5TXD
PLC side
9 pin D shape 8pin Round shape
Female plug male plug
5 GND 3 GND
(when SH-300 communicates with Emerson EC20 series PLC you are recommended to use the
programming cable )
The picture for 8 pin Round shape
Female plug