Omron E5ZE Operation Manual page 78

Hardware Test
Communications Test
The communications test can be performed when an RS-232C Communications Model or RS-422/RS-485 Com-
munications Model is being used.
The E5ZE can transmit and receive data to check its communications circuit by self-diagnosis (loop-back test).
The E5ZE transmits the following character string repeatedly for the communications test. "_" represents a space
and "[CR]" represents a carriage return.
Procedure
1, 2, 3...
Current Output
The E5ZE Current Output Model can be connected to a Power Controller or a Cycle Control Unit to enable more
accurate temperature control.
Heater voltage
Phase Control
Phase control is possible when a Current Control Model is used in combination with the G3PX Power Controller.
Phase control will enable highly-precise temperature control and prolongs the life of the heaters connected to the
E5ZE.
Cycle Control
Cycle control is possible when a Current Control Model is used in combination with the G32A-EA Cycle Control
Unit and a G3PA or G3NH SSR.
Cycle control will enable high-speed response with minimal noise generation.
The relationship between the output values and current output values of the Current Output Model are as follows:
4. To change the control point to be measured, set pins 5 and 8 of the FUNC-
TION switch to OFF and reset the UNIT selector.
E5ZE_Copyright_1995_OMRON_Corporation[CR]
1. While in hardware test mode, set pin 8 of the FUNCTION switch to ON.
2. Short-circuit the send data and receive data at the E5ZE when RS-232C or
RS-422 communications are being used, as follows:
Communications
interface
Short-circuit locations
3. Make sure that the SD or RD indicator is lit. The following indicate a commu-
nications error:
• The SD and RD indicators are not lit.
• The ERR indicator is lit.
If MB0, MB1, or MB2 is lit, this does not indicate an error.
Half cycle
Time
Phase Control
RS-232C
Communications
connector:
Pins 2 and 3
Heater voltage
0.2 s (control period)
Cycle Control
Appendix E
RS-422
Communications terminal
block:
Terminals 5 and 2
Terminals 1 and 4
Time
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