Yokogawa YFGW510 - Manual (Page 78)

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n [ISA] LED
If the LED turns off during operation, it may indicate that communication between YFGW510
and all field wireless network devices has been terminated. Investigate the connection of the
ISA100.11a antenna and the condition of the antenna extension cables, and re-establish com-
munication. If no abnormality is found in the antenna, check the status of field wireless devices
and any disturbances in wireless communication routes, and fix any problems to re-establish the
communication.
If the LED lights red, it may indicate the breakdown of the communication function of YFGW510.
Replace the main body or consult with Yokogawa Electric Corporation.
n [WLAN-C1]/[WLAN-C2] LED
If the LED turns off during operation, it may indicate that communication between the field wire-
less backbone LAN and the wireless LAN access point has been terminated. Investigate the
connection of the wireless LAN antenna and the condition of the antenna extension cables, and
re-establish communication. If no abnormality is found in the antenna, check for any disturbances
in wireless communication routes and fix any problems to re-establish communication.
If the LED lights red, it may indicate the breakdown of communication functions. Replace the
communication devices or consult with Yokogawa Electric Corporation.
n [WLAN-AP] LED
This LED is not used in YFGW510.