Reach Alpha 5 - Page 15

Reach Alpha Integration Manual | V006
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Legacy bulkhead connector
Older Alpha units may have a 5-pin connector instead of a 6-pin connector and will communicate over either
RS232 or RS485 as specified at the point of purchase.
RS232 configuration
RS485 configuration
Pin #
Description
1
GND
2
PWR
3
(not used)
4
RS232 TX
5
RS232 RX
Pin #
Description
1
GND
2
PWR
3
RS232 TX
4
RS485 B
5
RS485 A
CAUTION
The wires in the 5-pin cable are not colour-coded. All cables white with attached labels
denoting their function. Care must be taken to wire the cable correctly into the system.
CAUTION
5-pin connectors are not air-tight and can cause leak warnings to occur if left uncapped for
an extended period of time.