Model MAC-32-OD
Page 6
RS-232 COMMUNICATION PORT -COM 1 (RJ-45)
Pin # Description Comments
1
Data Terminal Ready
High at all times.
2
Request To Send
Raised 1 bit time before transmit,
dropped 1 bit time after transmit
3 +
Transmit Data
Transmit data (out of MAC)
4
Data Carrier Detect
Not Used *
5 +
Receive Data
Receive data (in to MAC)
6 +
Signal Ground
Circuit Ground
7
Ring Indicator
Not Used *
8
Clear To Send
Not Used *
Notes:
*
These inputs to MAC-32-OD are for special purpose only.
+
When connecting these signals to a (DTE), e.g. the RS-232 port of a P.C, pins 3,5,6 of the
RJ-45 are connected to pins 3,2,7 (in the same order) of the DB-25. When connecting to a
modem (DCE), the RJ-45 pins 3,5,6 are connected to 2,3,7 of the DB-25. A converter cable
and an RJ-45 to DB-25 adapter, model MA-K are included.
RS-485 COMMUNICATION PORT - COM 1 (RJ-11)
Pin # Signal Name
1
No Connection
2
No Connection
3
TXD / RXD -
4
TXD / RXD +
5
No Connection
6
No Connection
Auxiliary Output Relay
Special Function Spare Relay. Software Defined.
