Precision Digital PD865 - Manual (Page 6)

PD865 Snooper Modbus Serial Input Meter Instruction Manual
6
INTRODUCTION
The PD865 Snooper Modbus Serial Input Meter can be programmed as a
Modbus RTU Master, Slave, or Snooper. As a Master, the PD865 reads a
slave device, scales the data from it, displays the result, and operates the
internal relays and 4-20 mA output. The PD865 Master mode is capable of
polling up to 8 process variables (Proxy polling feature); it displays PV1 and
allows other PD865s in Snooper mode to read any of the variables being
polled by the Master. As a Slave, it is controlled by a master device. The
data sent to it by the master is scaled, displayed, and used to operate the
relays and 4-20 mA output. As a Snooper the PD865 listens to the Modbus
traffic and picks up a specific register or registers being polled by a Master
device from a specific slave device and processes the data being read.
The PD865 Snooper is housed in a shallow-depth 1/8 DIN panel meter
enclosure that features a NEMA 4X front panel. Data is displayed on an
adjustable intensity, six-digit seven-segment LED display. The Snooper can
be powered from 85-265 VAC or 12-36 VDC. It comes standard with 2
relays and is available with 2 additional relays and 4-20 mA output as
options.
ORDERING INFORMATION
85-265 VAC*
Model 12-36 VDC*
Model
Installed
PD865-6R2-06 2 relays
PD865-6R5-16
2 relays, 4-20 mA output/24 V
transmitter supply
PD865-6R7-16
4 relays, 4-20 mA output/24 V
transmitter supply
PD865-7R5-06 2 relays, 4-20 mA output
PD865-7R7-06 4 relays, 4-20 mA output
*All models may be powered from AC or DC. See Specifications for details.
Accessories
Model Description
PDA7485-I RS-232 to RS-422/485 Isolated Converter
PDA7485-N RS-232 to RS-422/485 Non-Isolated Converter
PDA8485-I USB to RS-422/485 Isolated Converter
PDA8485-N USB to RS-422/485 Non-Isolated Converter
PDX6901 Suppressor (snubber): 0.01 µF/470
Ω, 250 VAC
Enclosures
NEMA 4 & explosion-proof enclosures**
Plastic, steel, stainless steel & cast aluminum
**Enclosures available for 1-10 meters. Visit our website for details.