RS-485 network components
System Catalogue : Cabinet Components
|Extract||PP26-215_A0500||System Catalogue : Cabinet Components|
PCD7.T161 & PCD7.T162 - Terminator-Box
|Datasheet||PP26-538||PCD7.T161 & PCD7.T162 - Terminator-Box|
Installation Components for RS-485 networks
|Manual||26-740||Installation Components for RS-485 networks|
System Catalogue : E-Line
|Extract||PP26-215_A0160||System Catalogue : E-Line|
PCD7.T4850-RF - E-Line - Radio-Interface-Modem
|Datasheet||PP31-016||PCD7.T4850-RF - E-Line - Radio-Interface-Modem|
Timeout calculator RF-modem
|Software||Timeout calculator RF-modem|
|Timeout calculator for RF-modem||.xlsx||0.02 MB||Download|
Good to know
The PCD7.T160 was replaced by the smaller PCD7.T161 (230VAC) or the PCD7.T162 (24VAC/DC) in 2011. The repair of the PCD7.T160 is guaranteed until end of 2016.
PCD7 / Txxx
Label and schema of PCD7.T162 are incorrect on housings produced before week 22 of 2011 (FAQ #101615)
The label of the supply voltage pins 1L/2L and 3N/4N are inverted. This wrong label is present on the schema of the housing and directly on the pins.
When a PCD7.T162 produced before week 22 of 2011 (30.05.2011) has a 24V DC supply voltage it does not work when it is connected like described in the schema on the housing.
The pins 1L/2L and 3N/4N are printed inversely. This means that the functionality is still the same but the 24V DC need to be connected to the pins 3N/4N and the 0V to 1L/2L.
Units of PCD7.T162 produced after 11/22 (30.05.2011) are correctly labelled and they can be connected to the supply voltage as described in the schema on the housing.
RS-485 wiring information (FAQ #100152)
There are confusing screw terminal identifier terminologies around. Depending on the manufacturer the identifiers used are in conflict to the identifiers you can find in SBC manuals.
RS-485 is a Bus-system, therefore the signal wires shall not be crossed.
ConverterPCD Rx-Tx (or D)Rx-Tx /Rx-/Tx/ (or /D)/Rx-/Tx
Sometimes "+Data" and "-Data" can be found on devices. Then "+Data" propably has to be connected to "/Rx-/Tx" (or /D) and "-Data" to "Rx-Tx" (or D).
Some products form other manufacturers (p.e. RS232 - RS485 converters) are often inversly indicated. Therefore it is sometimes necessary to cross the wires.
ConverterPCD Rx-Tx/Rx-/Tx/ /Rx-/Tx/Rx-Tx
Profibus and Profi-S-I/O
ProfibusColour PCD7.T160 D-Sub 9pin on PCD Port 2 on PCD3.M3 and M6 A=RxD /TxD-NgreenDpin 8D B=RxD /TxD-PredD/pin 3/D
Example for the port 3 of the PCD3.M5540 as Serial-S-Bus
RS485 connection (Serial-S-Bus) between PCD3.M5540 port 3 (S-Net D-Sub used as RS485 Serial-S-Bus) and PCD2.M5540 port 2 (connector block X3):
PCD3.M5540 (D-Sub "S-Net", port 3)PCD2.M5540, X3, port2 equipped with a PCD7.F110 pin 3terminal 2 pin 8terminal 1
PCD7.T120 converter RS 232 - RS 485 doesn't work with PG5 and visualisation! (FAQ #100099)
This converter is not suitable for application where its RTS signal is driven by a PC (PG5 and Visualisation system). The different RTS-handling with Win XP / Vista cause problems. A stable connection can't be garanteed.
You find on the market intelligent RS 232 - RS 485 converter appropriated for PG5 and supervision. For swiss customer the following adapter is avalable from Distrelec: I-7520A Manufacturer: ICP-DAS