FAQ
Here you can find a number of questions and answers regarding our products.
PiiGAB 900S/T (2)
If the communication does not work, check that no other process locks that port.
Check that Modbus2Mbus or any slave port is not set to RS485.
Also enable RS-485 Failsafe in MBushub for more stable collection.
Category
PiiGAB 900S/T,
RS485 converter - Viltrus
0
0
The following list instructs how to configure a PiiGAB M-Bus 900/900S so that M-Bus meters can be read with RS485.
- Start the gateway’s web interface in any web browser.
- Go to the Configuration page.
- Select any slave port for the RS485 communication.
- Specify the following parameters:
- Type: Serial.
- Com port: RS-485.
- Baud rate: The specified communication speed on the RS485 bus.
- Bit Number: Number of data bits on the RS485 bus.
- Parity: The parity for the RS485 bus.
- Stop Bit: Number of stop bits on the RS485 bus.
- Timeout: Expected time to get answer from the M-Bus meter.
- Protocol: The data protocol on the RS485 bus.
- Press the Save settings.
- Connect the RS485-cable to the the gateways pin 8 (A) and 9 (B).
The picture shows Slave port 2 is configured for RS485 on 2400 baud, 8 data bits, even parity, 1 stop bit, 2000ms as timeout and M-Bus communication.
Note:
- Make sure the gateway doesn’t use the RS485-port anywhere else. For instance any other slave ports or the Modbus2MBus and/or the Wireless applications.
- The A and B pins should likely go to the opposite A and B on the RS485 master.
For example: A->A and B->B.
Category
PiiGAB 900S/T,
RS485 converter - Viltrus
0
0
RS485 converter - Viltrus (3)
Viltrus Converter Mbus2RS485
250 loads
Mbus connects to Converter terminals 1 and 2 - polarity independent
If connected correctly, Operating should be flashing and Offline and Overload should be off.
(in case of few loads, Offline may still be lit)
RS485 between Converter and Piigab
T+/R+ (3) on the Converter is connected to RS485 A (8) on Piigab
T-/R- (4) on the Converter is connected to RS485 B (9) on the Piigab
GND (5) on the Converter is connected to GND (10) on the Piigab
| Plinth | Details |
| 1 | Mbus + |
| 2 | Mbus |
| 3 | RS485 TD(A+) |
| 4 | RS485 TD(B-) |
| 5 | RS485 GND |
| 6 | 230V GND |
| 7 | 230V N |
| 8 | 230V L |
Category
RS485 converter - Viltrus
0
0
If the communication does not work, check that no other process locks that port.
Check that Modbus2Mbus or any slave port is not set to RS485.
Also enable RS-485 Failsafe in MBushub for more stable collection.
Category
PiiGAB 900S/T,
RS485 converter - Viltrus
0
0
The following list instructs how to configure a PiiGAB M-Bus 900/900S so that M-Bus meters can be read with RS485.
- Start the gateway’s web interface in any web browser.
- Go to the Configuration page.
- Select any slave port for the RS485 communication.
- Specify the following parameters:
- Type: Serial.
- Com port: RS-485.
- Baud rate: The specified communication speed on the RS485 bus.
- Bit Number: Number of data bits on the RS485 bus.
- Parity: The parity for the RS485 bus.
- Stop Bit: Number of stop bits on the RS485 bus.
- Timeout: Expected time to get answer from the M-Bus meter.
- Protocol: The data protocol on the RS485 bus.
- Press the Save settings.
- Connect the RS485-cable to the the gateways pin 8 (A) and 9 (B).
The picture shows Slave port 2 is configured for RS485 on 2400 baud, 8 data bits, even parity, 1 stop bit, 2000ms as timeout and M-Bus communication.
Note:
- Make sure the gateway doesn’t use the RS485-port anywhere else. For instance any other slave ports or the Modbus2MBus and/or the Wireless applications.
- The A and B pins should likely go to the opposite A and B on the RS485 master.
For example: A->A and B->B.
Category
PiiGAB 900S/T,
RS485 converter - Viltrus
0
0
