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CJ1W-B7A

CJ-series B7A Interface Unit

CJ1W-B7A

It transmits 16 points of I/O signals per word with a pair of cables. Easy and minimized wiring effort. This unit is available for CJ/NJ controller.

Item list of CJ1W-B7A

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last update: September 24, 2012

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)		 10 m max.
50 m max. (with shielded cable)
Power supply on both sides
(separate power supplies)		 10 m max.
100 m max. (with shielded cable)
Standard Power supply on one side
(common power supply)		 100 m max.
Power supply on both sides
(separate power supplies)		 500 m max.
Cables VCTF, 0.75 mm2, 3 conductors (power supply on one side (common power supply))
VCTF, 0.75 mm2, 2 conductors (power supply on both sides (separate power supplies))
Shielded cable, 0.75 mm2, 3 conductors (power supply on one side (common power supply))
Shielded cable, 0.75 mm2, 2 conductors (power supply on both sides (separate power supplies))

Note: 1. When separate power supplies are used, the B7A Interface Unit and B7A Link Terminal are supplied by separate
              external power supplies.
           2. When a common power supply is used, the B7A Interface Unit and B7A Link Terminal are supplied by the same
                external power supply.
*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.

Specifications

Mode Standard mode High-speed mode
I/O points IN 32/OUT 32 (CJ1W-B7A22)
IN 64 (CJ1W-B7A14)
OUT 64 (CJ1W-B7A04)
Transmission method One-way time-sharing multiplex transmissions
Transmission distance 500m max. 100m max.
Transmission delay 19.2ms (typical) 3ms (typical)
Minimum input time 16ms 2.4ms
Power Supply voltage
(allowable voltage range) 		12 to 24VDC (10.8 to 26.4VDC)
I/O memory Allocations Each Unit is allocated 4 words in the I/O Area (which starts at CIO 0000). The words are allocated
according to the mounting position of the Unit.
Transmission error bit A transmission error bit for each input port is allocated in the Basic I/O Unit Information Area.
Cable VCTF, 0.75mm2 recommended.

last update: September 24, 2012

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