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3 Configuration Units
NJ-series CPU Unit Hardware User’s Manual (W500)
3-5 B7A Interface Ports
3
3-5-4 B7A Communications Specifications
*1 We recommend OMRON S8-series Power Supply Units for the external power supplies.
*2 The capacity of the external supply current does not include the capacity required by the B7A Link Terminal.
*3 The minimum input time is the minimum time required by the B7A Interface Unit to read the input signals from the CPU
Unit.
*4 When a common power supply is used, the B7A Interface Unit and B7A Link Terminal are supplied by the same external
power supply.
*5 When separate power supplies are used, the B7A Interface Unit and B7A Link Terminal are supplied by separate external
power supplies.
3-5-4 B7A Communications Specifications
Item Specifications
Transmission
method
One-way time-sharing multiplex transmissions
Transmission delay
(communications
delay on
transmission path)
High-speed 3 ms typical, 5 ms max.
Standard 19.2 ms typical, 31 ms max.
Transmission points
CJ1W-B7A14 64 inputs (4 ports)
CJ1W-B7A04 64 outputs (4 ports)
CJ1W-B7A22 32 inputs (2 ports), 32 outputs (2 ports)
External power
supply voltage
*1
12 to 24 V DC (allowable voltage range: 10.8 to 26.4 V)
External supply
current
*2
CJ1W-B7A14 40 mA min.
CJ1W-B7A04 150 mA min.
CJ1W-B7A22 80 mA min.
Minimum input
time
*3
High-speed 16 ms
Standard 2.4 ms
Transmission
distance
High-speed Power supply on one side
(common power supply)
*4
10 m max.
50 m max. (with shielded cable)
Power supply on both sides
(separate power supplies)
*5
10 m max.
100 m max. (with shielded cable)
Standard Power supply on one side
(common power supply)
*4
100 m max.
Power supply on both sides
(separate power supplies)
*5
500 m max.
Cables
VCTF, 0.75 mm
2
, 3 conductors (power supply on one side (common power supply))
*4
VCTF, 0.75 mm
2
, 2 conductors (power supply on both sides (separate power supplies))
*5
Shielded cable, 0.75 mm
2
, 3 conductors (power supply on one side (common power supply))
*4
Shielded cable, 0.75 mm
2
, 2 conductors (power supply on both sides (separate power supplies))
*5