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1.3.10 DC Outputs
See Appendix A.
1.3.11 RS485 Serial Communications Link
The cable used should be suitable for data transfer at the selected rate (1200,
2400, 4800 or 9600 Baud) over the required distance. Transmitters/receivers
conform to the recommendations in the EIA Standard RS485.
The “A” terminal (Terminal 11) on the Profile Controller should be connected to
the “A” terminal on the master device; the “B” terminal (Terminal 12) on the
Profile Controller should be connected to the “B” terminal on the master device.
Where several Profile Controllers are connected to one master port, the master
port transceiver in the active state should be capable of driving a load of 12k
W per
Profile Controller; the master port transceiver in the passive state must have
pull-up/pull-down resistors of sufficiently low impedance to ensure that it remains
in the quiescent state whilst supplying up to ±100
mA each to the Profile Controller
transceivers in the high impedance state.
NOTE: The RS485 Serial Communications option and the Remote
Run/Hold option are mutually exclusive.
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