User`s manual

67
Chapter 3 System Overview
Channel and Slot Addressing
4
3
Channel and Slot Addressing
A channel refers to an individual relay on a switching module, or an
individual bit/port on a digital I/O module. The channel address is in the
form of snn, where s represents slot number and nn represents a channel
number.
For all mainframes, slot 0 refers to the 3499A/B/C control board. Valid
slot numbers are:
The channel number, nn, is plug-in module dependent. Detailed
information about channel numbers of individual plug-in modules is
given below and on the following pages.
3499A slots 0 through 5
3499B slots 0 through 2
3499C slots 0 through 9
Plug-in Module
Channel Addressing (snn)
s = Slot Number; nn = Channel Number
N2260A
40-Channel MUX Module
a
2-Wire Mode: s00, s01...s38, s39
N2261A
40-Channel GP Relay Module
s00, s01, s02, s03... s37, s38, s39
N2262A
4X8 Matrix Module
Row 0, 1, 2, 3; Column 0, 1, 2, 3... 6, 7
(s00, s01, s02... s07; s10, s11, s12... s17;
s20, s21, s22... s27; s30, s31, s32... s37)
b
a. The N2260A and N2266A can be only be used as a 40-channel 2-wire MUX modulein 3488 mode.
b. A channel number on a matrix module is formed in Slot-Row-Column format, i.e., channel address s23 means row 2,
column 3 in Slot s.