5. Internal Memory Configuration and Functions
5.2. Internal memory functions
82
Resistance Temperature Detector 2MLF-RD4A User's Guide
R200
Honeywell
September 2010
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.
2.
%UXa.b.14
: Module H/W error. If ‘ON’, refer to Troubleshooting.
3.
%UXa.b.13
: Module offset/gain memory error, refer to Troubleshooting.
4.
%UXa.b.0~3
: Offset/gain adjustment error of the applicable channel. If ‘ON’, it
means that Offset value, Gain value, or that there is disconnection when adjusted,
refer to Troubleshooting.
Figure 27 – READY/ERROR flag
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.