The Maximum Number Of Relay Units; Slave Station Interface Specifications - Mitsubishi Electric SWL31-ETMC User Manual

13-4. The Maximum Number of Relay Units

The maximum number of units which can relay communications between the master station and the
terminal slave station is defined as the maximum number of relay units.
"Configuration Example"
PLC

13-5. Slave Station Interface Specifications

Item
Target Unit
Number of Bits Occupied
(Only Slave Station)
Number of Words Occupied
(Only Slave Station)
Max No. of Bits Occupied
(Extension Units Included)
Max No. of Words
Occupied (Extension Units
Included)
I/O Interface
Pulse Count Function
*1: Words are occupied when the pulse count function is used. (Two word occupation per
channel)
SWL90-R4ML
Slave
Station 1
SWL90-ETMC
Master
Station
SWL90-R4ML
Slave
Station 5
Relay 1
Maximum No. of Relay Units: 3
Input: 144 points (system area included)
Output: 144 points (system area included)
Input 2 points/Output 2 points + Error output 1 point
(Input 2 points can be switched to the pulse count 2ch/1ch.)
(Memory retention available at power failure)
32/43
SWL90-R4ML SWL90-R4ML
Slave Slave
Station 2 Station 3
SWL90-R4ML SWL90-R4ML
Slave Slave
Station 6 Station 7
Relay 2 Relay 3
Specifications
SWL31-R4ML (Slave Station)
Input: 16 bits/per unit
Output: 16 bits/ per unit
Input: Max four words/per unit *1
Output: Max four words/per unit *1
Input: 36 points
Output: 36 points
Maximum two channels available
0 to 99999999
8 digits
( A ring counter)
SWL90-R4ML
Slave
Station 4
SWL90-R4ML
Slave
Station 8