Rice Lake Intrinsically Safe - Manual (Page 53)

320IS Installation Manual - Appendix A 47
7.2 Status Messages
Two EDP commands, P and ZZ, can be used to provide status about the indicator. These commands are described
in the following sections.
7.2.1 Using the P EDP Command
The P EDP command returns the current displayed weight value to the EDP port, along with the units identifier. If
the indicator is in an underrange or overload condition, the weight value is replaced with ^^^^^^ (overload) or
_ _
_ _ _ _
(under range).
7.2.2 Using the ZZ EDP Command
The ZZ EDP command can be used to remotely query which annunciators are currently displayed on the indicator
front panel. The ZZ command returns the currently displayed weight and a decimal number representing the LED
annunciators currently lit. The format of the returned data is;
wwwwww uu zzz
where
wwwwww uu
is the current displayed weight and units,
zzz
is the annunciator status value (see Table 7-3). If
more than one annunciator is lit, the second number returned is the sum of the values representing the active
annunciators.
Error Code Description Binary Value
1 EEPROM physical error 0000 0000 0000
0001
2 Virgin EEPROM 0000 0000 0000
0010
4 Parameter checksum
error 0000 0000 0000
0100
8 Load cell calibration
checksum error 0000 0000 0000
1000
16 A/D calibration
checksum error 0000 0000 0001
0000
32 Print format checksum
error 0000 0000 0010
0000
64 Internal RAM checksum
error 0000 0000 0100
0000
128 External RAM error 0000 0000 1000
0000
256 No optical
communication 0000 0001 0000
0000
512 A/D physical error 0000 0010 0000
0000
1024 A/D reference error 0000 0100 0000
0000
2048 Count error 0000 1000 0000
0000
4096 Low battery 0001 0000 0000
0000
8192 Display error 0010 0000 0000
0000
16384 A/D underrange 0100 0000 0000
0000
32768 Overflow 1000 0000 0000
0000
Table 7-2. Error Codes Returned on XE Command