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carrier communication, the carrier signal received by the binary input is connected to PLC
connection point (DISCAR-R1). As a result, (External DISCAR-R1) signal will be generated.
In addition, DISCAR has the scheme switch [DisCAR-CHSEL]. By this setting, (External
DISCAR-R1) signal generation is as follows.
Single : (External DISCAR-R1) signal will be generated by only (DISCAR-R1).
And : (External DISCAR-R1) signal will be generated by (DISCAR-R1) and
(DISCAR-R1-2) for fail safe.
Guard : (External DISCAR-R1) signal will be generated by (DISCAR-R1) and non
(DISCAR-R1-2) for fail safe.
In the integral carrier communication, the received carrier signals transmitted by the
DIF_COMM function are connected to PLC connection point (INT.DISCAR-R1-*). As a result,
(Integral DISCAR-R1-*) signals will be generated.
Used for the external carrier communication
(Carrier signal received at binary inputs)
Used for the integral carrier communication
(Carrier signal transmitted by the transmission control function (DIF_COMM))
Carrier signal (for Phase-A)
ase-A)
Carrier signal (for Phase-B)
Carrier signal (for Phase-C)
Carrier signal (for Short)
Figure 2.12-13 How to receive carrier signals
How to receive carrier signals from the remote terminal 2 is the same.
Note: When applying UOP or BOP, the user must assign the signal “C1_BIT”
(*)
to the PLC
connection points shown below.
(*)“C1_BIT” is a BIT type signal that always holds 1. The Data ID of the signal
is shown in
Appendix: Signal list for common function
.
- In the external carrier communication, assign the signal “C1_BIT” to the PLC
connection points (INT.DISCAR-R*-A), (INT.DISCAR-R*-B), (INT.DISCAR-R*-C) and
(INT.DISCAR-R*-S) that are not used in external carrier communication.
- In the integral carrier communication, assign the signal “C1_BIT” to the PLC
connection point (DISCAR-R*) that is not used in the integral carrier communication.
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