The LED of the SASI instruction or Send/Receive FBoxes in the fupla are always red

FAQ #100183

 

Case 1: The LED of the SASI instruction is contiuously red

Common causes:

• the port is configured as gateway master port, but the relevant option is not activated in the SASI FBox
• the same but vice versa
• the port is configured as S-Bus PGU Port
• there is no communication module at the selected port (for instance PCD7.F110 missing)

Case 2: The LED of the SASI FBox is green, but some of the LED's of the Send/Receive FBoxes are red

Common causes:

• the slave station is not present on the bus or does not reply in the expected time (timeouts, wrong baudrate, wrong S-Bus protocol). We recommend to place an S-Bus Station FBox per Slave. Like this the application does not try to reach the missing station each time and it is easy to detect the presence of the station
• there are two kinds of receive FBoxes. Make sure you didn't take a receive multiple FBox without wanting. This type of FBox reads the same ressources from different stations that have S-Bus addresses in an order (for instance 2, 3 and 4), which is rather special
• note that the LED's of the Send/Receive FBoxes are only updated if they are enabled