Appendix A Tank Level Pass-Through; Levelmaster Protocol Commands; Table 12: Commands For Tlpt For Board Part Number 2018546-005 (Firmware Versions 5.015 - 5.018); Table 13: Commands For Tlpt For Board Part Number 2104836-001 (Firmware Version 7.000) - ABB LevelMaster 7100 User Manual

Appendix A Tank level pass-through
Tank level pass-through is the ability to establish direct communication with the LevelMaster from the PCCU32 Terminal Mode.
The LevelMaster procotol used for this communication defines commands that can be issued to obtain different types of data
(values stored in the LevelMaster memory) that can help in troubleshooting. The following sections provide a description of the
commands supported, and the procedures to activate the pass-through and issue commands. Two examples are provided to
illustrate how data requested from the LevelMaster is displayed on the terminal screen.
A.1

LevelMaster protocol commands

By using tank level pass-through (TLPT), the user can to locate problems by communicationg at a base level using the
commands found in Table 12 and
Table 13. Choose the commands corresponding to the firmware version of the electronics board in the LevelMaster. Table 12
defines the commands for version 5.015-5.018 and
Table 13 defines the commands for version 7.0.

Table 12: Commands for TLPT for board part number 2018546-005 (firmware versions 5.015 - 5.018)

Command
Description
syntax
Return level(s), temperature,
errors, warnings,
U**?
any ID respond
Return level(s), temperature,
Unn?
errors, warnings
U**N? Return ID
UnnF? Return # floats
UnnOL? Return level offset
UnnV? Return firmware version
Return EPROM memory. 3
UnnEDn
Blocks, enter 0,1,2, or 3
Return level(s), temperature,
U???
errors in test mode, any ID
Return level(s), temperature,
Unn??
errors, warnings until power
off
UnnNnn Change ID
UnnFnROS Change # floats

Table 13: Commands for TLPT for board part number 2104836-001 (firmware version 7.000)

Command
syntax
U**?
U**??
U???
LevelMaster 7100 User manual 2105835 Rev AA | 86
Type example
U**?
U03?
U**N?
U03F?
U03OL?
U03V?
U03ED0
U???
U03??
U03N00
U03F1ROS
Description
Measure displacement
Measure displacement in endless loop
Measure displacement in old test mode
Read example
(value displayed)
U03D020.96D011.94F076E
0000W000C5ac0
U03D020.96D011.94F076E
0000W000C5ac0
U03N03Cd746
U03F2C01f6
U03OL+0079C0732
U03V5.018C09d3
See section A.2.1, Example
1: Obtaining the content of
the EPROM memory
See section A.2.2, Example
2: Obtaining raw data values
.
U03D020.96D011.94F076E
0000W000C5ac0
(repeated)
U03N00NOKCOf11
U03FOKC6f57
Meaning of read
03 ID, 20.96" Oil,
11.94" Water, No
Errors, CRC
Use only with 1
LevelMaster
connected.
03 ID, 20.96" Oil,
11.94" Water, No
errors, CRC
03 ID, CRC
2 Floats, CRC
+.79 Offset, CRC
5.108 firmware, CRC
All memory blocks.
Used to check gain and
others
Shows raw values and
other data, ie: V0, V1
to check gain.
Aid to trouble-
shoot RS485 bus.
ID change from 03 to
00, CRC
# Floats change OK,
CRC