Omron NSH5 Operation Manual page 56

Emergency Stop Switch
External Connection
Diagram
Internal Memory or Host
(PLC) Memory Allocation
(4) To ensure a secure stop, the stop category must be 0 or 1. (ISO 13850,
Item 4-4; IEC 60204-1, Item 9-2)
The status of the emergency stop switch's DPST-NC contact is output exter-
nally by hard-wired outputs via the Special Cable.
NSH5
Emergency stop switch
DPST-NC
EMG1
The emergency stop switch can be allocated any bit address in the internal
memory or host (PLC) memory, and the ON/OFF status can be monitored at
the allocated address.
To specify the address in internal memory or host (PLC) memory that is to be
allocated to the emergency stop switch, first select PT - System Setting in
CX-Designer and then click the NS Handy Terminal Tab. In the Key Status
Monitor Address Field, click the Set(1) Button for Emergency Stop (A), and
specify the address to allocate.
The following points apply to the emergency stop switch allocation.
• Only bit addresses can be set.
• Addresses can be set in either internal memory or host memory.
• System memory $SB cannot be allocated.
• No address is allocated for the default setting.
The NS Handy Terminal Tab can be selected only when the PT model is set
to the NSH5. It cannot be selected for any other PT model.
Special Cable
EMG1A1
EMG2A1
EMG2
EMG2A2
EMG1A2
Allocate an address in internal
memory or host memory to the
emergency stop switch.
Section 3-2
Safety circuit
35