PC3000 Complete Installation guide iss 12 - Elektro-Trading

Local Controller Plus Module
6-10
LKA1-8 configure port A, LKB1-4 configure port B and LKC1-4 configure port C.
The links have the following functions -
3 pin links may have the shorting link fitted in the forward position (towards the front
of the LCM-Plus), the rear position (towards the rear of the LCM-Plus) or not fitted
at all. When not fitted the shorting link may be ‘parked’ by hanging it off one pin.
Links Forward position Rear position Not fitted
LKA1 120Ω termination Not terminated Not terminated
LKB1
LKC1
on receiver (default)
LKA2 Transmitter Transmitter disabled Transmitter disabled
LKB2 permanently enabled when not transmitting when not transmitting
LKC2 Receiver permanently Receiver disabled when Receiver always
enabled (default) transmitter enabled enabled
2 pin links may be fitted or not fitted with a shorting link. When not fitted the
shorting link may be ‘parked’ by hanging it off one of the pins.
Links Fitted Not fitted
LKA3 & 4 Transmit and receive Transmit and receive
LKB3 & 4
LKC3 & 4
shorted (2-wire) separate (4-wire) (default)
Swap links may be fitted with all four vertical or all four horizontal. The swap links
(LKA5-LKA8) are only available on channel A of the LCM-Plus and permit simple
swapping of the transmit and receive pairs.
Links Vertical - Horizontal -
LKA5-LKA8 Swapped Normal (default)
RS232 is chosen by selection of appropriate wiring of the connectors. The configuration
links have no effect for RS232. RS232 is not available on port C of the LCM-
Plus.
PC3000 - Installation Guide