Omega DP41-B Series - Diagnostic Command

M - 13
 Value -100:
DATA
Desired
Values:
-100
DEVICE
ADDRESS
FUNCTION
CODE
06
REGISTER
DATA VALUE
(2 bytes used)
CRC
1
st
command
(for absolute
value)
1 BYTE
01
1BYTE
06
HB
00
LB
01
HB
00
LB
64
LB
D8
HB
B4
2
nd
command
(for Sign &
dec. point)
1 BYTE
01
1BYTE
06
HB
00
LB
81
HB
00
LB
90
LB
D8
HB
2E
Figure 8.5: Write (3 Data bytes) Commands Sample via
Infinity Configuration Software.
8 Diagnostic command.
This command echoes the sent message to indicate that the communication link is
established correctly.
Send to/Return from device:
DEVICE
ADDRESS
FUNCTION
CODE
DIAGNOSTIC
CODE
LOOPBACK
DATA
CRC
1 BYTE
hh
1 BYTE
08
HB
00
LB
00
HB
hh
LB
hh
LB
hh
HB
hh
where:
o Diagnostic Code is two byte code to determine the type of test to be performed.
o Universal Input Meters supported only “00” code which requested slave to echo
sent command back to the master.