16
Link Terminals with 16 I/O Points (Screw Terminal
and Modular Models)
B7A/B7AS
Transmit Signals while Saving Space
and Wiring Effort
More economical than previous multipoint trans-
mission terminals.
Transmit 16 input signals over just 2 wires (or 3
wires if only one Terminal has power supply.)
Models available with normal I/O delay time
(19.2 ms typical) or short I/O delay time (3 ms
typical).
Models available with the HOLD function or LOAD
OFF function for processing transmission errors.
A series of B7AS models as compact as 10-point
screw terminal models are available.
Ordering Information
Model Number Legend
Input Models
B7A
j
- T 6
j
j
1
2 3 4
1. Series
None: Standard
S:
Small
2. Input/Output Classification
T:
Input
3. Number of I/O Points
6:
16
5
4. Input Logic/Internal I/O Common
4
Input logic
Internal I/O common
A
NPN compatible
– common
B
NPN compatible
+/– common
C
PNP compatible
+/– common
D
PNP (TTL) compatible
---
5. I/O Delay Time (Typical)/Appearance
5
I/O delay time
Appearance
1
19.2 ms
Screw terminals
2
19.2 ms
Module
6
3 ms
Screw terminals
7
3 ms
Module
Output Models
B7A
j
- R 6
j
j
j
1
2 3 4
1. Series
None: Standard
S:
Small
2. Input/Output Classification
R:
Output
3. Number of I/O Points
6:
16
5
6
4. Output Logic/Output Capacity
3
Output logic
Output capacity
A
NPN open collector
0.05 A/point
B
NPN open collector
0.1 A/point
C
NPN open collector
0.5 A/point
F
PNP open collector
0.1 A/point
G
PNP open collector
0.5 A/point
5. Error Processing
1: HOLD
3: LOAD OFF
5: HOLD/LOAD OFF
6. I/O Delay Time (Typical)/Appearance
5
I/O delay time
Appearance
1
19.2 ms
Screw terminals
2
19.2 ms
Module
6
3 ms
Screw terminals
7
3 ms
Module
Product List
Refer to page 114 for details.
I/O Combinations
Refer to pages 1 to 5 for details.