Pythia Technologies Inc. - 740-363-2272
www.pythiatech.com
4
1.
Introduction
The Pythia Tech MicroServer Level 0 for Modbus (MS0-MBT) provides data translation for Modbus/RTU
to/from Modbus/TCP. The User Guide provides assistance with connecting and configuring your MS0 to
your equipment.
Device 1
Device 2
Device 3
Device 4
Modbus RTU
Modbus RTU
Modbus TCP
Modbus TCP
2.
Terminal Block Connector
By default, the terminal block connector is configured for RS422 2-wire. The labeling of the connector
represents the Modbus slave device connections. To simplify wiring, the connector’s TX/RX lines are
swapped internally.
2.1
RS-422 4-wire
Connector Modbus Device
2-pair STP, 18-24ga.
4-wire
Master Device
UP
G
n
d
R
x+
R
x-
Tx
+
Tx
-
POWER
n/a
GND
GND
RX+
RX+
RX-
RX-
TX+
TX+
TX-
TX-
