CHAPTER 1: Specifications
1. Specifications
Compliance: CE; FCC Part 15 Subpart B Class A, IC Class/classe A
Interfaces: EIA/TIA RS-232, DTE or DCE (user-selectable); EIA/TIA RS-422/485
Protocol:Asynchronous
Data Rate: Transparent to data rates up to 64 kbps
Data Format: Transparent to data format
Flow Control: Transparent to software flow control; holds RS-232 hardware flow-control outputs high, but can be set so that RS-232 hardware flow-control inputs (DTR or RTS) enable the RS-422/485 driver
Operation: RS-422/485: 4-wire full duplex, point-to-point or multipoint
Maximum Distance: RS-232: 50 ft. (15.2 m) to attached device RS-422/485: 4000 ft. (1219.2 m) to farthest attached
device
User Controls: | All board-mounted; |
| (1) | 8-position DIP-switch jumper for DTE vs. DCE; |
| (1) | 1-position DIP switch for RS-422/485 termination; |
| (1) | Jumper for RS-422/485 always ON vs. controlled; |
| (1) | Jumper for RS-422/485 controlled by DTR vs. RTS; |
| (1) | Jumper/solder terminal for interconnection of frame |
| ground and RS-232 signal ground |
Indicators: | (3) Front-mounted LEDs: TX, RX, POWER |
Connectors: | RS-232: (1) DB25 female; |
| RS-422/485: (1) 4-position terminal block |
Leads/Signals | |
Supported: | RS-232: Pins 1 through 8 and 20 (PGND, TD, RD, RTS, |
| CTS, DSR, SGND, DCD, and DTR); |
| RS-422/485: TXA, TXB, RXA, RXB; |
| For additional information, see the Appendix |
