GST Addressable Accessories
P-9945A Loop Network Card
Description
| | P-9945A is an optional card for GST-IFP8 control panel, providing two photoelectric isolation RS485 interfaces for ring network. This card shouldn’t be inserted and removed when it is energized. “Network OK” is displayed when the panel is switched on. That means successful registration. |
| | |
| |
| |
| LEDs: |
Master Interface（ A1B1） com HL1 LED: Green. It
illuminates steadily or flashes when RS485 master
interface is in normal communication.
Slave Interface（ A2B2） com HL2 LED: Red. It
illuminates steadily when RS485 slave interface is
in normal communication.
In the network made of those cards, each of RS485
loop shouldn’t exceed 1200m in all, supporting the
network of maximum 32 GST series control panels.
Features
| |
Two photoelectric isolation RS485 interfaces. Suitable for ring network. |
Note: for those slots (from down to up), the first slot is
corresponded to LOOP2, the second slot is
corresponded to LOOP4, the third to LOOP 6, the fourth
to LOOP8 and the fifth to LOOP10. Terminals are
connected according to the orders below: O- is
connected to I-; O+ is connected to I+; I+ is connected to
O+; and I- is connected to O-.
Specification
| Com. Interface | Two RS485 interfaces |
| Com. Distance | The distance between two neighbor nodes is less than 1200m |
| Network Capacity | Maximum 32 GST series control panels for networking. |
| Transmission Medium |
1.0 mm2 or above twisted pair, shielded twisted pair is recommended. |
| Baud Rate | 4800bps |
| Ambient Temperature |
0℃～+40℃ |
| Relative Humidity | ≤95%， non condensing |
