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Chapter 4: Inputs
16-module rack. On the ISACC circuit board is a 50-pin DIP connector at
location P13 (located adjacent to the input terminal block). The signals at the DIP
header are internally connected to the input terminal block. Configure all input
shunts to the TEMP position.
IMPORTANT: The 16-module rack is used in lieu of the input terminal
block, both cannot be used at the same time. When using a 16-module
I/O rack, all 16 inputs are dedicated to using input modules. If a smaller
number of input modules are needed, use a smaller rack and hardwire
the rack to the input block.
To use the 16-module rack:
1. Connect the ribbon cable between the 16-module rack and the DIP
connector on ISACC. Make sure that pin 1 on the rack connects to pin 1
on the DIP header.
2. Install the jumper wire at the card edge pad 49 on the rack, or connect
the positive terminal on the rack's 2-position terminal strip to 5V on the
ISACC POWER terminal block.
1 2 3 4 5 6 7 8 9 10 11 12
INPUTS
AC input
AC input
DC input
DC input
DC input
DC input
AC input
AC input
0 1 2 3 4 5 6 7
P13
1
Red stripe
1
49
Mounting hole
Ribbon cable
Card edge connector
2IO-16
Socket connector
plugged into P13
on ISACC circuit
board
ISACC circuit board
13 14 15 16
16-module
rack
Solid state
output modules
- +
(Input terminal
cannot be used
with the 16-
module rack)
16 15 14 13 12 11 10 8976543
2
1
16-module rack connection