9–16 EPM 9450/9650 ADVANCED POWER QUALITY METERING SYSTEM – INSTRUCTION MANUAL
DIGITAL STATUS INPUT MODULE CHAPTER 9: EXTERNAL I/O MODULES
9.9.1 Overview
The Digital Status Input Module is used either for additional status detect or for
accumulating pulses from external equipment, such as power meters, water meters, etc.
The EPM 9450/9650 meter supplies power for up to 4 connected Digital Status Input
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.
9.9.2 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
9.9.3 Normal Mode
The device polls the inputs at 100Hz (once every 10 msec), debouncing the inputs and
incrementing the Transition Accumulators for each channel as appropriate.
The inputs are represented by Channel 1 in the LSB through Channel 8 in the MSB of the
low order byte of the register.
The Modbus Map for the Digital Status Input Modules (and operating details) can be found
in the Modbus Communicating I/O Modules Manual.
Factory Settings Modbus Address: 164
Baud Rate: 57600
Transmit Delay Time: 0
Default Settings (Reset Button) Modbus Address: 247
Baud Rate: 57600
Transmit Delay Time: 20msec
Digital Status Input Module Specifications
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