16
Compatible Devices Section 1-3
Note 1. The power supply requirements are described below. Refer to 2-3 Supply-
ing Power to the Slaves
for details on these power supplies.
2. Refer to SECTION 5 Slave Specifications and Operations for details on
Slaves.
Network Power Supply These Slaves use a single power supply and can be supplied with power from
the Special Flat Cable for CompoBus/S.
Multiple Power Supplies These Slaves require two separate power supplies for communications and I/
O.
The communications power can be supplied from the Special Flat Cable for
CompoBus/S.
Local Power Supply These Slaves require a single external power supply. The power cannot be
supplied from the Special Flat Cable for CompoBus/S.
1-3-3 Cables
Cables The following table lists the cables that can be used in a CompoBus/S Sys-
tem.
Note 1. Do not use cables other than those specified above.
2. For information on communications cables specified by overseas manufac-
turers, refer to
Appendix Standard Models.
Fiber Amplifier
Communications
Unit
None E3X-SRT21 8-point input or 16 point input (with
Fiber Amplifier Unit connected)
Network
Analog Input Termi-
nals
None SRT2-AD04 Switchable between 4-point, 3-
point, 2-point, and 1-point analog
input
Analog Output Ter-
minals
None SRT2-DA02 Switchable between 2-point and 1-
point analog output
I/O Link Units None CPM1A-SRT21 8 inputs, 8 outputs
(For CPM1A/CPM2A)
---
CPM2C I/O Link
Units
None CPM2C-SRT21 8 inputs, 8 outputs (For CPM2C) ---
Type Previous models New models I/O points Power supply
Slave SRT1 Series SRT2 Series
Cable Specifications
2-conductor VCTF cable
(sold commercially)
Vinyl-clad VCTF JIS C 3306
Two 0.75 mm
2
conductors (2 signal wires)
Resistance: 25.1 Ω/km at 20°C
Use only 2-conductor VCTF cable.
4-conductor VCTF cable
(sold commercially)
Vinyl-clad VCTF JIS C 3306
Four 0.75 mm
2
conductors (2 signal wires and 2 power
supply wires)
Resistance: 25.1 Ω/km at 20°C.
Special Flat Cable
(OMRON SCA1-4F10,
100 m)
Four 0.75 mm
2
conductors
(2 signal wires and 2 power supply wires)
Maximum ambient temperature: 60°C
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