ProSoft Technology PTQ-AFC - Manual (Page 202)

Diagnostics and Troubleshooting PTQ-AFC ♦ Modicon Quantum Platform
User Manual Liquid and Gas Flow Computer for Hydrocarbon Products
Page 202 of 259 ProSoft Technology, Inc.
June 23, 2011
10.1 User LEDs
There are two "user" LEDs used to indicate overall module status; App Stat and
Active (with Cfg, Prt2, or P3).
10.1.1 App Stat LED
State Description
Rapid Blinking The processor is offline (probably in program mode).
Steady On Some meter is indicating an alarm or no meters are enabled.
Off The module is functioning properly.
10.1.2 Cfg, Prt2 or Prt3
These LEDs indicate current Modbus traffic on any port.
State Description
On A Modbus command for the module is recognized. On Port 3, this LED may also
indicate that a Modbus Master command was sent.
Off No Activity