Serial interfaces
NOTICE
Damage to the serial communication interface by using 5-pin terminal block of the TA5101-4DI!
If the 5-pin terminal block of the TA5101-4DI option board is plugged into a option board for COMx serial communication TA5141-RS232I, TA5142-RS485I or TA5142-RS485, the communication interface will be damaged by the 24 V.
Please do not confuse the 5-pin terminal block of the TA5101-4DI with the 5-pin terminal block for serial communication interface of TA5141-RS232I, TA5142-RS485I or TA5142-RS485.
|
Serial interface |
Pin |
Signal |
Description |
|---|---|---|---|
 |
1 |
RTS |
Request To Send DCE is ready to accept data from the DTE |
|
2 |
TxD |
Transmit data (output) |
|
|
3 |
GND |
Common Ground |
|
|
4 |
RxD |
Receive data (input) |
|
|
5 |
CTS |
Clear To Send (input) DCE is ready to accept data from the DTE |
Cable length
The maximum possible cable length of a serial connection subnet within a segment depends on the transmission rate.
RS-232 for point-to-point connection:
|
Parameter |
Value |
|---|---|
|
Transmission rate |
9.6 kBit/s to 115.2 kBit/s |
|
Maximum cable length |
On request |