2192-09100-000-000
Page 6
J592 APCI-SER4
Synchronous Clock selection, RS232 and RS485/422 enabling/disabling
There are four groups of nine pins: each group contains three two-position links. They are LK14A-C,
LK24A-C, LK34A-C and LK44A-C. The first digit of the link number refers to the channel; the letter
refers to the function.
The A links control receiver enables. If a link is inserted in position A on one of these links, the
receive buffer is enabled when RTS is active. If the link is in position B, the receive buffer is
permanently enabled.
The B links change the function of ribbon cable wires 3, 13, 23 and 33. Position A connects to the
RS485 transmitted data signal, position B connects to the 85230 TRXC clock inputs via RS232
buffers.
The C links change the function of ribbon cable wires 5, 15, 25 and 35. Position A connects to the
RS485 receive data signal, position B connects to the 85230 RTXC clock inputs via RS232 buffers.
LK14A
LK14A
A
B+
RX buffer enabled when RTS active
RX buffer is permanently enabled
LK14B
LK14B
A
B+
Pin 3 of D-Type connects RS485 TX data
Pin 3 of D-Type connects to 85230 TRXC clock input via RS232 buffer
LK14C
LK14C
A
B+
Pin 5 of D-Type connects to RS485 RX data
Pin 5 of D-Type connects to 85230 RTXC clock input via RS232 buffer
LK24A
LK24A
A
B+
RX buffer enabled when RTS active
RX buffer is permanently enabled
LK24B
LK24B
A
B+
Pin 13 of D-Type connects RS485 TX data
Pin 13 of D-Type connects to 85230 TRXC clock input via RS232 buffer
LK24C
LK24C
A
B+
Pin 15 of D-Type connects to RS485 RX data
Pin 15 of D-Type connects to 85230 RTXC clock input via RS232 buffer
LK34A
LK34A
A
B+
RX buffer enabled when RTS active
RX buffer is permanently enabled
LK34B
LK34B
A
B+
Pin 23 of D-Type connects RS485 TX data
Pin 23 of D-Type connects to 85230 TRXC clock input via RS232 buffer
LK34C
LK34C
A
B+
Pin 25 of D-Type connects to RS485 RX data
Pin 25 of D-Type connects to 85230 RTXC clock input via RS232 buffer
LK44A
LK44A
A
B+
RX buffer enabled when RTS active
RX buffer is permanently enabled
LK44B
LK44B
A
B+
Pin 33 of D-Type connects RS485 TX data
Pin 33 of D-Type connects to 85230 TRXC clock input via RS232 buffer
LK44C
LK44C
A
B+
Pin 35 of D-Type connects to RS485 RX data
Pin 35 of D-Type connects to 85230 RTXC clock input via RS232 buffer
