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Operating modes – Precision Digital PD865 User Manual

Page 8

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PD865 Snooper Modbus

Serial Input Meter

Instruction Manual

8

ENVIRONMENTAL Operating temperature range: -40 to 65°C

Storage temperature range: -40 to 85°C
Relative humidity: 0 to 90% non-condensing

CONNECTIONS

Removable screw terminal blocks accept 12 to 22 AWG
wire.

ENCLOSURE

1/8 DIN, high impact plastic,
UL 94V-0, color: gray

MOUNTING

1/8 DIN panel cutout required. Two panel mounting
bracket assemblies provided

TIGHTENING
TORQUE

Screw terminal connectors: 4.5 lb-in (0.5 Nm)

OVERALL
DIMENSIONS

2.45" x 4.68" x 4.19" (62 mm x 119 mm x 106 mm)
(H x W x D)

WEIGHT

8.0 oz (227 g) (2 relays)
9.7 oz (275 g) (4 relays, 4-20mA Output & 24 V supply)

WARRANTY

3 years parts and labor

Operating Modes

MASTER

Processes data read from a Modbus RTU slave device
(only one process variable at a time can be displayed on
the master).
Proxy polling feature: Polls up to 8 process variables from
up to 8 slave devices. The Master processes and displays
PV1 and allows other PD865s in Snooper mode to read any
of the variables being polled.

SLAVE

Processes data sent to it from a Modbus RTU master
device.

SNOOPER

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.

Note: The relays and the 4-20 mA output are functional in
all modes.