SmartPlate Installation, Operation & Maintenance Manual
APPENDIX A – MODBUS CONTROL AND COMMUNICATION
OMM-0069_0H • SP-100 • 1/30/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 103 of 134
Error 2: RAM self-test fail
Return Controller for repair
Return Controller for repair
Error 4: Keyboard failure.
Stuck button or button was
pressed during power-up
Switch power off and then on, without touching
any of the controller buttons
Error 5: Faulty internal
communication
Check printed circuit board interconnections. If
the fault cannot be cleared, return the controller
for repair.
Digital filter chip faulty or
loose board inside controller
Return Controller for repair
Return Controller for repair
Faulty or loose module, or isolation problem
Faulty or loose module, or isolation problem
Faulty or loose module, or isolation problem
Return Controller for repair
Secondary Input Missing or
Disconnected
This error may result from no power to the flow
meter (check for green power light on rear of
meter or 0-5V flowmeter signal connections), or a
disconnection of the Molex connector between
feedforward sensor and the Eurotherm controller.
A3.1. Clearing Hardware Error (Hw.Er) Display
To clear a Hardware Error and reset the Temperature Controller, proceed as follows:
CLEARING HARDWARE ERROR Display Instructions
1. Display flashes Hw.Er after adding or removing comm. bd.
2. Simultaneously press the Page ( ) and Scroll ( ) buttons on the Temperature
Controller.
3. Using the Up (▲) arrow button, change the password to “8”.
4. Simultaneously press the Page ( ) and Scroll ( ) buttons again and observe the
Temperature Controller display. The top line will display “8” and the bottom line will display
“NO”.
5. Press the Up (▲) arrow button to toggle the display from “NO” to “YES”.
6. Simultaneously press the Page ( ) and Scroll ( ) buttons to “Reset” the
Temperature Controller and clear the Hardware Error.
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