Switch Output Configuration; External Connections - Omron NSH5 Operation Manual

Overview
1-1-6

Switch Output Configuration

1-1-7

External Connections

• Setting parameters and monitoring operation anywhere in expansive facil-
ities
The stop/emergency stop switch uses DPST-NC contact + NO bit. Of these,
DPST-NC contacts are used for external hardware outputs. The remaining NO
bit can be allocated any bit in the internal memory or in the host (PLC) mem-
ory.
Six function switches can be allocated any bits in the internal memory or in
the host (PLC) memory. Four of the function switches can be output to exter-
nal contact outputs.
The enabling switch (DPST-NO) can also be output to external contact out-
puts.
Stop/emergency stop switch
(DPST-NC contact + NO bit)
F1
F2
F3
F4
F5
10 function switches
F6
F7
F8
F9
F10
Enabling switch
(DPST-NO)
External
output
Enabling switch outputs 4 function
(DPST-NO) switch outputs
The hard-wired outputs operate even when the PT power supply is OFF.
Use a Special Cable (NSH5-232/422-CW-@@M, UL type: NSH5-232/422UL-
@@ M ), loose-wires and D-Sub connector on one end) to connect the signals
as follows:
• Emergency stop switch/stop switch
When using as a safety system, connect to safety components. (Do not
connect to the PLC.)
• Enabling switch
When using as a safety system, connect to safety components. (Do not
connect to the PLC.)
• Serial communications (RS-232C or RS-422A)
Connect to the serial port of the PLC.
• Function switches
Connect to an DC Input Unit of the PLC.
NSH5
Allocation
Internal memory
Stop/emergency stop switch
Allocation
F5 F4 F3
F9 F8
F10
Color STN LCD
24-VDC power supply
Stop/emergency stop
switch outputs (DPST-NC)
Section 1-1
Host (PLC) memory
Stop/emergency stop switch
F5 F4 F3
or
F9 F10 F8
RS-232C
or RS-422A
5