2.1. RS-232 (Interactive & Block modes)
Interactive and Block modes support the 3-wire RS-232 configuration with TXD, RXD and signal common. The cable requires an overall shield to protect against electrical noise. Xon and Xoff can be used for communication handshaking.
| 3-Wire RS-232 |
| | |
Host Controller | | MAP450D Terminal Block |
| | | |
TXD | | Pin 9 | RXD |
| | | |
RXD | | Pin 10 | TXD |
| | | |
Signal Ground | | Pin 8 | Return |
| | | |
2.2. RS-422/485 (Interactive & Block modes)
Interactive and Block modes support the 3-wire and 5-wire RS-422/485 configurations. The 3-wire configuration has both transmit and receive on the same pair of wires plus a signal common. The 5-wire configuration has differential signal pairs for transmit and receive plus a signal common. In both configurations the signal pairs must be twisted and surrounded by an overall shield.
NOTE: When using 3-wire RS-422/485, Jumper JP4 must be in position “B”. Refer to section 2.4 for instructions.
3-Wire RS-422/485
Host Controller | MAP450D Terminal Block |
| | |
TXD+ & RXD+ | Pins 4 & 6 | RXD+ & TXD+ |
| | |
TXD- & RXD- | Pins 5 & 7 | RXD- & TXD- |
| | |
Signal Ground | Pin 8 | Return |
| |
|
5-Wire RS-422/485 |
| |
Host Controller | MAP450D Terminal Block |
| | |
TXD+ | Pin 4 | RXD+ |
| | |
TXD- | Pin 5 | RXD- |
| | |
RXD+ | Pin 6 | TXD+ |
| | |
RXD- | Pin 7 | TXD- |
| | |
Signal Ground | Pin 8 | Return |
| | | |