P-9940A RS485 NETWORK CARD FOR GST200 & GST200-2

P-9940A is an optional card for GST200 series control panels, providing two photoelectric isolation RS485 interfaces.

• This card shouldn’t be inserted and removed when it is energized. 
• When entering calibration mode, pressing the SK1 key (reset main board), it will display Color CRT OK if registration is successful.
• LEDs:
• 1. Mainboard communication HL1 LED: Red. It flashes when it communicates with the main board normally.
• 2. Master Interface（A1B1）communication HL2 LED: Green. It illuminates steadily when the RS485 master interface is in normal communication and there is no message transmitting on the loop.
• 3. Slave Interface 2（A2B2）communication HL3 LED: Green. It illuminates steadily when the RS485 master interface is in normal communication and there is no message transmitting on the loop.  In the network made of those cards, A1B1 connects with the A2B2 of the neighbor control panel. Each of RS485 loop shouldn’t exceed 1200m in all, supporting the network of a maximum of 32 GST series control panels.