Page 6–4 Stellar
®
SR55 Series Soft Starter User Manual – 1st Ed, Rev F – 09/18/2019
Chapter 6: Accessories
How to connect the remote touchscreen
•
Ensure starter’s Modbus Network Settings are: Even parity and 19200 baud rate. If
connecting to multiple starters, set the Address to a unique number for each SR55 starter.
• If remote touchscreen start/stop control is desired, set the Control Method to Modbus
Control. If the remote touchscreen will only be used for monitoring or configuration (digital
input or local touchscreen start/stop control will be used), select the appropriate setting
(Local Touchscreen, User Programmable, 2-wire control, or 3-wire control).
•
Connect remote touchscreen using the SR55-RJ45-RJ12 adapter and a standard Ethernet
patch cable. If connecting to multiple starters, a Modbus splitter (SR55-SPLT) will be required
for each starter.
•
On the remote touchscreen go to Modbus Network Settings as shown in Fig 1. and select
Scan Bus. This will show all the SR55 starters on the bus Fig 2. Select which starter you wish
to connect to.
• Alternatively you can select the Address number and then select Connect to connect to that
particular starter.
•
The status screen Fig 3 on the remote touchscreen will display the current starter it is
connected to by displaying the starter’s node address and serial number (EX: address 01 and
serial number A0167805)
Fig 1 Fig 2 Fig 3
How to use the remote touchscreen
•
The remote touchscreen’s control for starting and stopping overrides the starter’s onboard
touchscreen when the starter’s Control Method is set to Modbus Control. Menu navigation,
configuration, and monitoring are still possible on the starter’s touchscreen.
•
Press the starter icon box on the Status screen of the remote touchscreen to change to
another starter if controlling multiple starters from one remote touchscreen.
•
When using the remote touchscreen for start/stop control the remote touchscreen has
full control, configuration, and monitoring capabilities, while the local touchscreen on the
starter only has configuration and monitoring capabilities. Digital outputs always function as
programmed, regardless of Control Mode. Digital inputs are disabled during Modbus Control
and Keypad Control Modes, but are active during all other Control Modes.
•
The remote touchscreen can be used for monitoring and configuration during any other
control method besides Modbus Control.
The remote touchscreen cannot be used with a communication module installed (SR55-
CM-ENETIP or SR55-CM-MODTCP).
The remote touchscreen is a Modbus RTU master device. A PLC, HMI, or other Modbus
Master device cannot be used on the same network while the remote touchscreen is
connected.
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