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Appendix B
Specifications
203
Connectable B7A Link Terminals
Only 16-point B7A Link Terminals can be connected to a B7A Interface Unit. These are listed in the following
tables.
Input Terminals
Type
Model
Transmission delay
Screw terminals
B7A-T6
j
1
Standard (19.2 ms)
B7AS-T6
j
1
(
)
B7A-T6
j
6
High-speed (3 ms)
B7AS-T6
j
6
g
p
(
)
Modular
B7A-T6D2
Standard (19.2 ms)
B7A-T6D7
High-speed (3 ms)
PC connectors
B7A-T
j
E3
Standard (19.2 ms)
B7A-T
j
E8
High-speed (3 ms)
Output Terminals
Type
Model
Transmission delay
Screw terminals
B7A-R6
jj
1
Standard (19.2 ms)
B7AS-R6
jj
1
(
)
B7A-R6
jj
6
High-speed (3 ms)
B7AS-R6
jj
6
g
p
(
)
Modular
B7A-R6A52
Standard (19.2 ms)
B7A-R6A57
High-speed (3 ms)
PC connectors
B7A-R
j
A
j
3
Standard (19.2 ms)
B7A-R
j
A
j
8
High-speed (3 ms)
Note 1. Do not connect Terminals with different transmission delays to the same Interface Unit. Doing so will
cause a transmission error.
2. B7A Link Terminals with 10-points and B7A Link Terminals with mixed I/O (8 inputs/8 outputs) cannot be
connected to B7A Interface Units. Use 16-point B7A Link Terminals. 16-point B7A Link Terminals
include 16-point (input or output) models, models with 2 circuits configured with 16 points, and models
with 16 points of mixed I/O.
Comparison between Standard and Group-2 B7A Interface Units
Type
Models
Word allocations
Connectable B7A Link Terminals
yp
Transmission
delay
Transmission
errors
Points
Standard
C200H-B7AI1
Same as I/O Units (in order
mounted)
Standard
types only
Input status
held
16-point
Terminals only
C200H-B7AO2
mounted).
types only
(19.2 ms)
held
automatically
Terminals only
(10-point,
32
i t
d
Group-2
C200H-B7A12
Words 030 to 049 allocated
according to I/O number setting
Standard
(19 2 ms) and
Switch setting
to hold or
(
p
32-point, and
mixed I/O
C200H-B7A02
according to I/O number setting
(same as Group-2 High-density I/O
(19.2 ms) and
high-speed
to hold or
reset Input
mixed I/O
Terminals cannot
be connected
C200H-B7A21
(same as Group 2 High density I/O
Units; see note below)
high speed
(3 ms) types
(set via
reset Input
status.
be connected.
C200H-B7A22
(set via
switch)
Note In the case of Group-2 B7A Interface Units, words 030 to 049 (Group-2 High-density I/O Unit and B7A Inter-
face Unit Area) are allocated according to the setting of the I/O number setting switch on the front of the Unit
as shown in the following table. For mixed I/O Units, words are allocated in in the order output
→
input.