Rice Lake Star DP8340 Dot Matrix - User Manual - Manual (Page 33)

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TYPE
ONLY
D
8-2. Interface Circuit
8-2-1. RS-232C
Input (RXD, CTS)
Output (DTR, FAULT, TXD, RCH, RTS)
Figure 8-1. RS232-C Interface
8-2-2. Current Loop
Input (TTY-RXD, TTY-RXDR)
Output (TTY-TXD, TTY-TXDR)
Note: Resistance should be set so that Current Loop is restricted to the range of
10 ~ 20 mA.
Figure 8-2. Current Loop Interface