Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 580)

I/O Interface
Section 10A
10A-57
Selecting Voltage or Current Mode
The NIO4V analog module has a user selectable DIP switch setting which
allows you to configure the input channels as either current or voltage
inputs. The switches are located on the analog module board.
ATTENTION: Care should be taken to avoid connecting a
voltage source to a channel configured for current input.
Improper module operation or damage to the module can occur.
1
2
Cu
rre
nt
Cu
rre
nt
Vo
lta
ge
Switch 1 = Input Channel 0
Switch 2 = Input Channel 1
On -- Current Mode
Off -- Voltage Mode
O
N
The module has two individual switches labeled 1 and 2. These switches
control the input mode of input channel 0 and 1. A switch in the ON
position configures the channel for current input. A switch in the OFF
position configures the channel for voltage input.
Output channels are always voltage mode and can not be configured.
Wiring 1746 Analog I/O
Belden cable #8761 is recommended when wiring analog modules. Use
the following guidelines in planning the system wiring for the analog
modules:
all analog common terminals (ANL COM) are electrically connected
inside the modules. ANL COM is not connected to earth ground inside
the module.
10A.8
1746 Analog I/O