11: D
ATA
L
INK
C
OMMUNICATION
11-2
FC5A M
ICRO
S
MART
U
SER
’
S
M
ANUAL
FC9Y-B1268
Note:
When FC5A-SIF4 expansion RS485 module is used at the master station and all slave stations to set up a data link communication
system, the maximum cable length is 1200m. Otherwise, the maximum cable length is 200m.
Data Link System Setup
To set up a data link system, install the RS485 communication adapter (FC4A-PC3) to the port 2 connector on the all-in-
one type CPU module.
When using the slim type CPU module, mount the RS485 communication module (FC4A-HPC3) next to the CPU module.
When using the optional HMI module (FC4A-PH1) with the slim type CPU module, install the RS485 communication
adapter (FC4A-PC3) to the port 2 connector on the HMI base module (FC4A-HPH1).
FC5A-SIF4 Expansion RS485 communication module can also be mounted to the CPU module to add port 3 through 7.
Connect the RS485 terminals A, B, and SG on every CPU module using a shielded twisted pair cable as shown below. The
total length of the cable for the data link system can be extended up to 200 meters (656 feet).
A B SG
Cable
Cable
A B SG
Master Station
Slave Station 1
Slave Station 2
Slave Station 31
RS485 Communication
Adapter FC4A-PC3
on Port 2 Connector
HMI Base Module
FC4A-HPH1
All-in-One Type
CPU Module
Slim Type
CPU Module
Shielded twisted pair cable 200 meters (656 feet) maximum
Core wire 0.3mm
2
RS485 Communication
Module FC4A-HPC3
RS485 Communication
Adapter FC4A-PC3
on Port 2 Connector
Data Register
D900-D1271:
transmit/receive data
Special Data Register
D8069-D8099:
communication error code
D8100:
data link slave station number
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
