Utility and library to talk to industrial devices from Focon Electronics Systems A/S, as used in:
- Stadsgewestelijk Materieel-gemoderniseerd (SGMm) operated by the Dutch railway company Nationale Spoorwegen (NS);
- Various trains operated by the Danish railway company Danske Statsbaner (DSB);
- Use pip:
pip install .
Supported displays will have two connectors on the side, labeled X1 and X2, with the following pin-out:
X1:
/-------------------\
A | 1 - 3 4 5 6 |
B | 1 2 3 4 5 6 |
---------------------
A1: power GND
B1: power Vcc
B2: N/C
3: address bit 0
4: address bit 1
5: address bit 2
6: address bit 3
X2:
/-------\
Y | 1 2 3 |
|-------|
X | 1 2 3 |
---------
X1: RS-485 in-
X2: RS-485 in+
Y1: RS-485 out-
Y2: RS-485 out+
3: RS-485 GND
Connect a 60-140V DC power supply to pins B1 and A1, and bridge the address pin pairs as desired (or leave them all unbridged for ID 0). Connect a RS-485 transceiver to pins X1, X2, and X3, and a 120 ohm terminating resistor between Y1 and Y2.
Now, use any of the display subcommands to talk to the device, passing the path to your serial device using -d and the device address using -i:
$ focon-util -d /dev/ttyUSB0 -i 0 display info
boot:
type: FA
version: 1.01
app:
version: 1.30
product:
part: 390024
name: Focon Electronics Systems A/S DSB dot 16
stats:
memory: FreeBuffer: 8:20:4 [S:M:L] RunTime: 0:0:1:18 [D:H:M:S]
network: SnpInfo Tx=000002, Rx=000003 --- Error: Pkt=00, PktNo=00, TxBuf=04, NoAnswer=00, Chk=00
sensors: 19; EnvermentBrightness følger: %d mV
If this does not work, check your address pins and RS-485 connectivity. To make sure your display works at all, try bridging all adress pin pairs: upon startup, the display should then enter self-test mode.
Currently supported drawing commands are:
- Displaying text:
focon-util -d ... display print "Beste reizigers"