QUANTUM™ HD COMPRESSOR CONTROL PANEL
COMMUNICATIONS SETUP
090.040-CS (JAN 14)
Page 44
Byte Count in data returned
Data in register 2000
Data in register 2001
Response 01 Out: 00
.
00 00
.
00 00
.
07 01 03 04 00
.
20 00
.
16
Command 00 In: 00
.
00 00
.
00 00
.
06 01 03 07
.
D0 00
.
02
# of registers to read
Address of first register (2000)
Read Holding register
Modbus ID
# of bytes in command
Always 0 for Modbus TCP
Transaction Identifer
STATUS
Panel - ModBus TCP Log
ACCESSING:
Panel ModBus TCP Log
DESCRIPTION: This screen allows the technician to view all of
the Modbus TCP communications information that the Quan-
tum™ HD is receiving and transmitting.
Each time a new command is sent or received, the screen up-
date with the new information.
The top line of data is the most recent activity. At the left of
each line, you should see whether the data is IN or OUT (Re-
ceive or Send), and the actual data (in Hexadecimal format).
This information can be used to compare against the data be-
ing sent and received at the other end of the communications
link, to verify proper operation.
Refer to the following table for an example of how the data
packets are created, using the data that has been shown on
the above screen:
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