9–14 EPM 9450/9650 ADVANCED POWER QUALITY METERING SYSTEM – INSTRUCTION MANUAL
DIGITAL SOLID STATE PULSE OUTPUT (KYZ) MODULE CHAPTER 9: EXTERNAL I/O MODULES
9.8.1 Overview
The KYZ Pulse Output Modules have 4 KYZ Pulse Outputs and accept Read and Write
Commands with at least 4 registers of data per command. Digital Solid State Pulse Output
(KYZ) Modules are user programmed to reflect VAR-hours, Watt-hours, or
VA-hours. See the Modbus Communicating I/O Modules User Manual for details on
programming the module.
The EPM 9450/9650 meter supplies power for up to 4 connected KYZ Pulse Output
modules. See Section 9.2 for power and communication details. Refer to Section 5.6.2 to
determine if you must use an additional power source, such as GE’s PSIO.
The Modbus Map for the KYZ Pulse Output Module (and operating details) can be found in
the Modbus Communicating I/O Modules Manual.
NC = Normally Closed; NO = Normally Open; C = Common.
9.8.2 Communication
Maximum registers per request, read or write, is 4 registers.
The device will operate with the following Default Mode Parameters. See Section 9.4 for
details.
Address: 247 (F7H)
Baud Rate: 57600 Baud
Transmit Delay Time: 20 msec
9.8.3 Normal Mode
Energy readings are given to the device frequently. The device generates a pulse at each
channel after a certain energy increase.
Normal Operation consists of three processes:
1. The first process accepts writes to registers 04097 - 04112. Writes can be up
to four registers long and should end on the fourth register of a group (register
04100, or registers 04103-04112 or registers 04109-04112). These writes can
be interpreted as two-byte, four-byte, six-byte or eight-byte energy readings.
The reception of the first value for a given channel provides the initial value for
that channel. Subsequent writes will increment the Residual for that channel
by the difference of the old value and the new value. The previous value is
Factory Settings Modbus Address: 160
Baud Rate: 57600
Transmit Delay Time: 0
Default Settings (Reset
Button)
Modbus Address: 247
Baud Rate: 57600
Transmit Delay Time: 20msec
Digital Solid State Pulse Output Module Specifications
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