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REFERENCING I/O POINTS
Serial Modules
The following table applies to these I/O units only:
SNAP-B3000-ENET
SNAP-ENET-RTC
SNAP-ENET-S64
SNAP-PAC-R1
SNAP-UP1-ADS
SNAP-UP1-M64
SNAP-SCM-232, SNAP-SCM-485, SNAP-SCM-485-422, and SNAP-SCM-W2 modules each have two
serial ports, A and B. Profibus modules (SNAP-SCM-PROFI) have one serial port.
To establish an Ethernet connection with a serial module, you use the IP address of the I/O unit the
module is on, plus the IP port number for the module’s serial port. The following table shows default
port numbers for each port in each position on the largest rack. For a Profibus module, use the Port A
port number.
Module
Position
Port
IP Port Number
Module
Position
Port
IP Port Number
0
A
22500
8
A
22516
B
22501
B
22517
A
22502
A
22518
B
22503
B
22519
A
22504
A
22520
B
22505
B
22521
A
22506
A
22522
B
22507
B
22523
A
22508
A
22524
B
22509
B
22525
A
22510
A
22526
B
22511
B
22527
A
22512
A
22528
B
22513
B
22529
A
22514
A
22530
B
22515
B
22531
1
2
3
4
5
6
7
9
10
11
12
13
14
15
These port numbers can be changed if necessary. See page 44 for instructions.
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ioManager User’s Guide