Datasheet

238 Programmable Controllers
CJ1W-SRM21
CompoBus/S Master Unit
CompoBus/S is a high-speed I/O bus
• Up to 256 I/O points per Master.
• Up to 32 Slaves per Master.
• Communications cycle time: 0.5 ms (at 750 kbps).
• Communications distance: Up to 500 m
(at 93.75 kbps).
• Free wiring with any branching method for up to
200 m (in long-distance communications mode).
Function
A high-speed ON/OFF bus that automatically transfers remote I/O sta-
tus to the CPU Unit without any programming in the CPU Unit. High-
speed remote I/O is supported by a communications cycle time of 1 ms
maximum for 256 I/O points.
System Configuration
Specifications
Master
Note: Uses Special I/O Unit Area (in CIO Area).
CompoBus/S Master Unit
Remote I/O
CompoBus/S
Slaves
32 max.
750 kbits/s, 100 m
93.75 Kbits/s, 500 m
I/O points 256 (128 inputs and 128 outputs) or 128 (64 inputs and 64 outputs) (Switch-selectable)
Allocated words For 256 I/O: 20 words (8 for inputs, 8 for outputs, 4 for status)
For 128 I/O: 10 words (4 for inputs, 4 for outputs, 2 for status)
No. of mountable Master Units 40
Node address 8 addresses per node
No. of connectable Slaves 32
Status information Communications Error Flags, Participation Flags
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