Milltronics VT-Modem-1 WW, Instruction Manual

Page: 17 / 24

7ML19981DP02 External Modem Kit – INSTRUCTION MANUAL Page 13
RS-485 Modem Kit Instruments
MultiRanger 100, MultiRanger 200, HydroRanger 200, IQ Radar 300,
AiRanger with Smartlinx Modbus RTU Card (multidrop applications)
Modem Dip Switch Settings
Set the Modem dip switches as follows:
MultiRanger 100/200, HydroRanger 200
Port 2 set-up parameters:
*(2) refers to the primary index (secondary index 0).
Wiring Diagram for Connection to MultiRanger 100/200, HydroRanger 200
1. Connect the communication cable to the MultiRanger 100/200 or HydroRanger 200
as follows:
Parameter Description
P770 (2)* = 3 Modbus RTU slave
P771 (2) = 1 Modbus slave address of 1
P772 (2) = 9.6 9600 baud
P773 (2) = 0 no parity
P774 (2) = 8 8 data bits
P775 (2) = 1 1 stop bit
P778 (2) = 1 modem attached
P779 (2) = 300 Modem inactivity timeout = 300
off
on
1 2 3 4 5 6 7 8
34 COM
GND
RS-485 Modem
Terminal Block
MultiRanger 100/200,
HydroRanger 200
Terminal Block
B
+ TD
35 A
- TD
36
6 5
4
Siemens Hardware