Vitronics Soltec XPM3m, Техническое справочное руководство

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Technical Reference Manual-XPM3m Revision Date: August 2014
RS-232 Serial Communication check - continued
Connector P1 on the oven controller (top most connector) is an RS-232 programming port used for updating the
program application stored in the flash memory of the oven controller.
Connector P2 on the oven controller (second connector from the top) is used for RS-232 communications with the
PC.
Check that the run toggle switch on the front of the oven controller (DI board) is in the up position and that the top
green run LED is on. Refer to sheet 46 on schematic 4254600 for wire connections and an LED layout of the oven
controller (DI board).
The COM2 RXD and COM2 TXD LEDs on the front of the oven controller indicate RS-232 communication activity
between the PC and the oven controller.
COM2 RXD is a green LED and flashes as the PC sends data to the oven controller.
COM2 TXD is a red LED and flashes as the oven controller sends response data to the PC.
Verify that the COM2 RXD green LED is flashing to indicate that the PC is sending commands to the oven controller.
If the LED is not flashing then verify that the PC oven software is running and sending data by observing the
modem icon on the screen.
Using an Ohm meter check the continuity of the communications cable. The pin assignments are as follows:
DB-9 Pin #2 (RX of PC) to DI Board P2-1 (TX of VCS)
DB-9 Pin #3 (TX of PC) to DI Board P2-2 (RX of VCS)
DB-9 Pin #5 (SG of PC) to DI Board P2-5 (SG)
DB-9 Pin #4 (DTR of PC) to DI Board P2-3 (used for programming mode only on P1)
DB-9 Pin #6 (DSR of PC) to DI Board P2-4 (used for programming mode only on P1)
If the COM2 RXD green LED is flashing to indicate that the PC is sending commands and the COM2 TXD red LED
is not flashing then the oven controller is not responding to the commands sent by the PC.
Important Note: If the run toggle switch on the oven controller is set in the down position the oven controller will not
automatically run the application stored in its flash memory on power up and will not respond to any commands sent
by the PC.
Momentarily press the small red reset button on the front of the oven controller with the run toggle switch on the
front of the oven controller (DI board) set in the up position. This restarts the oven controller application, assuming
that there is a valid application loaded in the oven controller. When the oven controller starts running an application
all of the green LEDs on the front are on initially and all of the red LEDs are off until there is communication activity
on the oven controller communication ports.
In the rare case that the 3 green and 3 red communication status LEDs on the front of the oven controller flash on
and off approximately every 2 seconds in sync then the oven controller may be experiencing a run time error or
other unforeseen error from invalid or possibly corrupt data. To clear this type of error perform the following:
Shut off power to the oven controller by switching off F55.
Remove the DI board from the rack.
Remove the battery from the DI board for a few seconds to clear all of the RAM on the board.
Re-install the battery.
Re-install the DI board in the rack.
Switch F55 back on.
The communication status LEDs should not be flashing at this point other then the COM2 RXD green LED if the PC
oven software is running and attempting to communicate with the oven controller.
Through the PC oven software download the oven configuration to the oven controller since the configuration was
lost when the battery was disconnected. The PC oven software normally displays a pop up dialog when it detects
that the oven controller is not configured.