Section IV – Diagrams
Table 5. MNET Board Terminal Assignments
Connector: CN1
1COM2232Tx 485Tx-
2COM2485Tx+
3COM2232Rx 485Rx+
4COM2485Rx-
5 Common
6COM3232Tx 485Tx-
7COM3485Tx+
8COM3232Rx 485Rx+
9COM3485Rx-
10 Common
Terminal #Description232 485
Connector: CN2
1COM1232Tx 485Tx-
2COM1485Tx+
3COM1232Rx 485Rx+
4COM1485Rx-
5 Common
Terminal #Description 232485
Connector: CN3
1 RTD +
2SIG +
3SIG -
4RTD -
5 Shield
Terminal #Description
Connector: CN4
1Input (DC) #1 +
2Input (DC) #1 -
3 Input (DC) #2 +
4Input (DC) #2 -
5 Input (DC) #3 +
6Input (DC) #3 -
7 Pulse Out +
8Pulse Out -
Terminal #Description
Connector: CN5
1Meter Pulse Input/Channel A +
2Meter Pulse Input/Channel A -
3Factory Use Only - Do not connect
4Factory Use Only - Do not connect
5Shield
6Meter Pulse Input/Channel B/Metered Inj +
7Meter Pulse Input/Channel B/Metered Inj -
8Factory Use Only - Do not connect
9Factory Use Only - Do not connect
10 Shield
11 Output (DC) #1 +
12 Output (DC) #1 -
13 Output (DC) #2 +
14 Output (DC) #2 -
Terminal #Description
Connector: CN6
1Factory Cable to MACF (DC PW R +)
2Factory Cable to MACF (Common)
3Factory Cable to MACF (+12 Vdc Transmitter) power
4Factory Cable to MACF (Common)
5Factory Cable to MACF (Earth/Enclosure Gnd)
Terminal #Description
Connector: CN7
1 AC Output Common
2N.C.
3Output (AC) #6
4Output (AC) #5
5Output (AC) #4
6Output (AC) #3
Terminal #Description
Connector: CN8
RJ-45 Ethernet Port
14-20 mA input +
2Return - (Common).
Connector: CN9
Terminal #Description
Connector: CN15
Factory Cable to MACF (CN1)
Note: Electronically connected to common
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