Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 582)

I/O Interface
Section 10A
10A-59
Analog Module NIO4V
(5) ANL COM
(6) NOT USED
(7) OUT 0
(8) ANL COM
(9) NOT USED
(10) OUT 1
(11)ANL COM
ANALOG
POWER
(4) IN 1--
(3) IN 1+
(2) ANL COM
(1) IN 0--
1746- NIO4V
(0) IN 0+
OUTPUT INPUT
(5) ANL COM
(6) NOT USED
(7) OUT 0
(8) ANL COM
(9) NOT USED
(10) OUT 1
(11)ANL COM
(4) IN 1--
(3) IN 1+
(2) ANL COM
(1) IN 0--
(0) IN 0+
+
Analog source
--
PE
Jumper
unusedinputs
+
Analog Load
--
PE
Do not jumper
unused outputs
Reading/Writing Analog Data
The analog I/O module passes values to PAL through the I/O ring. The
variable used to read/write the analog I/O module data is assigned using
the PAL I/O assigner (refer to your 9/Series PAL Reference Manual for
details). The following table shows the values of these PAL variables:
Table 10A.AN
Analog Input Decimal Values (to PAL)
Voltage/Current Range Decimal Representation Number of Significant Bits Resolution per LSB
-- 10V to + 10V (1LSB) --32,768 to + 32,767 16 bits
0V to 10 V (1LSB) 0 to 32,767 15 bits
305.176mV
0V to 5V 0 to 16,384 14 bits
305.176mV
1V to 5V 3,277 to 16,384 13.67 bits
--20mA to +20mA --16,384 to +16,384 15 bits
1.22070mA
0 to +20mA 0 to 16,384 14 bits
1.22070mA
4 to +20 mA 3,277 to 16,384 13.67 bits