Appendix A: Communications; Modbus Address Table - Siemens 9200 Features Manual

Appendix A: Communications

This section describes the Modbus communications protocol employed
by a meter with the Megawatt option in a Modbus network. It is assumed
that the user is familiar with serial communications in general, and the
Modbus protocol. Refer to the document 9200 Modbus Protocol for more
information.

Modbus Address Table

In the following Modbus map, many numeric measurements are scaled.
Scaling is either fixed or programmable.
For an example of fixed scaling, suppose that the frequency register 40115
contains the value 5987. Since this register is scaled by "x100" the actual
measured value is 59.87 Hz.
For an example of programmable scaling, suppose that the meter Vln a
value is 480.1. If the PVS scaling is set to "x10" (default), then register 40100
will contain a value of 4801. If the PVS scaling is set to "0.1," then register
40100 will contain a value of 48. The meter supports programmable
scaling for voltage (PVS), current (PCS), neutral current (PnS), and power
(PPS).
Modbus Addr Meter Measurement
40001 manufacturer's ID
40003 firmware revision
40004 oem ID
40005 meter options
40007 # meter power ups
# peak demand
40008
resets
40009 meter on-time
40011 # flash erase cycles
40013 device type
40014 Reserved
demand interval
40015
down counter
Reserved
40100 kVln a
40101 kVln b
Format Scale
UINT32 x1
UINT16 x1
UINT16 x1
UINT32 x1
UINT16 x1
UINT16 x1
UINT32 x1
UINT32 x1
UINT16 x1
UINT16 x1
UINT16 PVS
UINT16 PVS
Appendix A: Communications
Default Scale Description
See note 1.
See note 2.
See note 3.
See note 4.
See note 5.
x10 See note 6.
x10
13