How to Replace the ROM Card in Glass Tempering Furnace

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Source : www.landglass.co Release time:2013-12-06

Sometimes, the PLC program of the glass tempering furnace needs to be upgraded. When there are requests for PLC program upgrading, customer may receive a ROM card with upgrading program for PLC from LandGlass; the customer can replace the original ROM card with the new one according to following steps:

1. Open the door of PB3 cabinet. You may see the Siemens PLC modules.

2. Turn off the power of module No.1.

3. Press the "PUSH" button of module No.2, and the previous ROM card should bounce out of its slot.

4. Plug in the new ROM card, following the indicating diagram on module NO.2.

5. Turn on the power of module NO.1.

6. The PLC should be in proper working situation if "SF" indicator-lamp is off. Once the "SF" indicator lamp is on, please operate as the following steps:

7. Turn and hold the switch (RUN-STOP-MRES) on the CPU module to "MRES" position until quick flashing of "STOP" indicator lamp stops (If "STOP" indicator lamp does not flash quickly, please switch "STOP" to "MRES" position again until the lamp flashes quickly);

8. Quickly release the switch, it will turn back to "STOP" position automatically.

9. Quickly turn the switch to "MRES" position until slow flashing of "STOP" indicator lamp stops.

10. Then, The PLC shall work properly.