8 – Inepro Metering – PRO Series
5.2 Basic errors
0.05Ib Cosφ = 1 ±1.5%
0.1Ib Cosφ = 0.5L ±1.5%
Cosφ= 0.8C ±1.5%
0.1Ib - Imax Cosφ = 1 ±1.0%
0.2Ib - Imax Cosφ = 0.5L ±1.0%
Cosφ = 0.8C ±1.0%
5.3 Infra-red specification
Infrared wavelengths 900- 1000nm
Communication distance Direct contact
Protocol IEC62056-21:2002 (IEC1107)
5.4 M-bus communication specifications (PRO380-Mb only)
Bus type M-bus
baud rate 300, 600, 1200, 2400, 4800 and 9600 (default)
Range ≤1000m
Downlink signal Master to slave
，
Voltage modulation
Uplink signal Slave to master
，
Current modulation
Cable JYSTY
（
n×2×0.8
）
Protocol EN13757-3
Maximum bus load 64 meters per bus*
5.5 RS485 communication specifications (PRO380-Mod only)
Bus type RS485
Protocol MODBUS RTU with 16 bit CRC
Baud rate 1200, 2400, 4800, 9600 (default)
Address range 0-247 user settable
Maximum bus load 60 meters per bus*
Range ≤1000m
*Note that the maximum number of meters is dependent on the converter, baudrate (the higher the
baudrate the smaller the number of meters which can be used) and the circumstances under which the
meters are installed.
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