Modbus Point Mapping - Trane E50 Series Installation, Operation And Maintenance Manual

Modbus Point Mapping

The E50C2-T2 Full Data Set (FDS) features data outputs such as demand calculations, per phase
VA and VAR, and VAh VARh accumulators. For security reasons, configuration and resets on all
E50 models are protected by a user configurable passcode. The meter supports variable CTs and
PTs, allowing a much wider range of operation from 90V x 5A up to 32000V x 5000A. To promote
this, the meter permits variable scaling of the 16-bit integer registers via the scale registers. The
32-bit floating point registers do not need to be scaled. Integer registers begin at 001 (0x001).
Floats at 257 (0x101). Configuration registers at 129 (0x081). Values not supported in a particular
System Type configuration will report QNAN (0x8000 in Integer Registers, 0x7FC00000 in
Floating Point Registers).
Table 2. Supported Modbus Commands
Command
0x03
0x04
0x06
0x11
0x2B
BAS-SVX073C-EN
Description
Read Holding Registers
Preset Input Registers
Preset; Single Register
Report ID
• Return String : #bytes following w/out crc
– byte0: address
byte1: 0x11
–
– byte2: #bytes following 2/out crc
– byte3: ID byte = 247
– byte4: status = 0xFF if the operating system is used;
status = 0x00 if the reset system is used
– bytes5+: ID string = "Veris Industries E50xxA Power
Meter Full Data Set" or "Veris Industries E50xxA Power
Meter - RESET SYSTEM RUNNING RS Version x.xxx" last
2 bytes: CRC
Read Device Identification, BASIC implementation (0x00, 0x01
and 0x02 data), Conformity Level 1.
• Object Values:
– 0x01: "Veris Industries"
0x02: " E50xxA"
–
– 0x03: "Vxx.yyy", where xx.yyy is the OS version number
(reformatted version of the Modbus register #7001,
(Firmware Version, Operating System).
– If register #7001 == 12345, then the 0x03 data would
be "V12.345").
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