Terminal blocks

The IB1004 and the SB1004 have four terminal blocks in total, two on each board. There are nine terminals in each terminal block.

All A/D inputs are grouped into terminal blocks 1 and 2.
All D/A outputs are on terminal block 3.
Relay outputs and the serial port are on terminal block 4.

ib1004_tb

Terminal block 1

Terminal #	Function
9	A/D channel 4, negative input (-)
8	A/D channel 4, positive input (+)
7	A/D channel 3, negative input (-)
6	A/D channel 3, positive input (+)
5	A/D channel 2, negative input (-)
4	A/D channel 2, positive input (+)
3	A/D channel 1, negative input (-)
2	A/D channel 1, positive input (+)
1	A/D GROUND (isolated from the rest of the device)

Terminal block 2

Terminal #	Function
9	A/D channel 8, negative input (-)
8	A/D channel 8, positive input (+)
7	A/D channel 7, negative input (-)
6	A/D channel 7, positive input (+)
5	A/D channel 6, negative input (-)
4	A/D channel 6, positive input (+)
3	A/D channel 5, negative input (-)
2	A/D channel 5, positive input (+)
1	A/D GROUND (isolated from the rest of the device)

Terminal block 3

Terminal #	Function
9	D/A channel 4, current output
8	D/A channel 4, voltage output
7	D/A channel 3, current output
6	D/A channel 3, voltage output
5	D/A channel 2, current output
4	D/A channel 2, voltage output
3	D/A channel 1, current output
2	D/A channel 1, voltage output
1	D/A GROUND (isolated from the rest of the device)

Terminal block 4

Terminal #	Function
9	Relay 2, normally opened line
8	Relay 2, normally closed line
7	Relay 2, common line
6	Relay 1, normally opened line
5	Relay 1, normally closed line
4	Relay 1, common line
3	Serial port: TX (RS232); TX/RX+ (RS485)
2	Serial port: RX (RS232); TX/RX- (RS485)
1	SYSTEM (COMMON) GROUND