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Specifications
Caution
If the terminals are not connected correctly, the internal circuitry of the B7A Link Terminal will be
!
damaged.
Note 1. The transmission cable must be a VCTF cable with a thickness of 0.75 mm
2. Do not wire power lines or high-tension lines along with the transmission cable in the same conduit.
Input mode
Function
Switch setting
Bit no.
00 to 14
allocation
ll
i
15
Status of input indicator lamp 15
Status of the ERR indicator
The ERR indicator is lit when an error occurs. If the error is corrected, the ERR indicator is OFF at the next trans-
mission cycle.
When there is a transmission error, the B7A Link Terminal will hold the data just before the occurrence of the trans-
mission error. If there is a transmission error because the B7A Link Terminal is turned off, however, data 0 is trans-
mitted in the first transmission cycle when the B7A Link Terminal is turned on again.
Transmission errors between the C200H-B7A01 and B7A Link Terminal are detected by the B7A Link Terminal
only. Check the ERR indicator and error bit for any error.
Performance Specification
Item
I/O points
Transmission distance
Transmission delay
Minimum input time (see note 2)
Internal current consumption
External power supply (see note 1)
Weight
Note 1. The external power supply capacity does not include the capacity required by the B7A Link T erminal.
2. The minimum input time is the minimum time required to read input signals from the CPU. Be sure that
the ON/OFF width of signals sent to B7A Interface Unit output relays is at least 16 ms.
Connection Terminals
SIG:
Connects to the SIG terminal of the B7A Link Terminal.
V–:
Connects to the negative power terminal of the B7A Link Terminal.
Input Mode Selector
The B7AI1 incorporates an input mode selector on the back panel of the Unit,
with which the following modes can be set.
15 points + 1 error
Fifteen-point input from the B7A Link
Terminal is effective. Bit 15 is used as
transmission error bit.
Upper side
Input 00 to input 14
Transmission error bit
Not used
Lit when there is a transmission error and OFF during normal transmission
C200H-B7AI1
16 points or 15 points and 1 error
input
500 m max. if power is supplied to the Interface Unit and B7A Link Terminal
separately.
100 m max. if power is supplied to the Interface Unit and B7A Link Terminal
from a single power supply.
Typ. 19.2 ms, 31 ms max.
---
5 VDC, 100 mA max.
12 to 24 VDC 10%, 10 mA min.
200 g max.
Appendix B
2
minimum.
16 points
Sixteen-point input from the B7A Link
Terminal is effective.
Lower side
Input 00 to input 14
Input 15
Lit when input 15 is ON. Not lit when
input 15 is OFF.
C200H-B7AO1
16 output points
16 ms
12 to 24 VDC 10%, 30 mA min.
101
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