5.2 Internal Memory Functions; Read Module Ready/Error Flags (Internal Memory Address %Uxa.b.14~15); Run Channel Flag (Internal Memory Address %Uxa.b.16~27); Figure 27 - Ready/Error Flag - Honeywell 2MLF-RD4A User Manual

5. Internal Memory Configuration and Functions
5.2. Internal memory functions

5.2 Internal memory functions

Read module READY/ERROR flags (internal memory address %UXa.b.14~15)

1. %UXa.b.15: It will be ON when PLC CPU is powered or reset with RTD module
completely ready.
%UXa.b.14: Module H/W error. If 'ON', refer to Troubleshooting.
2.
%UXa.b.13: Module offset/gain memory error, refer to Troubleshooting.
3.
%UXa.b.0~3: Offset/gain adjustment error of the applicable channel. If 'ON', it
4.
means that Offset value, Gain value, or that there is disconnection when adjusted,
refer to Troubleshooting.

Run channel flag (internal memory address %UXa.b.16~27)

1. Run information of respective channels is saved at memory location
%UXa.b.16~27.
2. %UXa.b.19~24: Setting error information of the applicable channel. If flag status is
'1', see the data monitoring area for setting error information flag (addresses 60–
63).
3. %UXa.b.20~23: It displays input disconnection status of the applicable channel. If
flag status is '1', see the data monitoring area for disconnection information code
(addresses 68–71).
4. %UXa.b.16~19: It displays the run status of the applicable channel. If the
applicable channel bit of 'used CH setting area (address 0)' is set to 1, it will be 1.
82 Resistance Temperature Detector 2MLF-RD4A User's Guide
Figure 27 – READY/ERROR flag
Honeywell
R200
September 2010