Information On Dcs-816 Serial Interface (Figure 7-8) - Samsung DCS-816 Programming Manual

SAMSUNG
DCS-816

7.10 Information on DCS-816 Serial Interface (Figure 7-8)

There is a variety of data terminal equipment and data communication equipment at sites and
sometimes it may be confusing how to connect the equipment to the SIO1 card. Generally, the
connections described in sections 7.5 to 7.7 are sufficient to work most equipment. However, the
following, more detailed information, should help if you encounter any problems.
SIO1 BOARD (DTE DB9)
DCD (1)
RXD (2)
TXD (3)
DTR (4)
GND (5)
DSR (6)
RTS (7)
CTS (8)
RI (9)
INFORMATION ON SERIAL INTERFACE
The signal "DSR (6)" is pulled-up with a resistor in the serial interface which meets the
requirements of most data equipment. However, some printers cannot operate with the pull-up
resistor and may cause trouble. If so, DCD (1) may replace DSR (6).
For signalling protocol, all parameters can be adjusted with relevant programming (MMCs 725 and
804) and the default settings are as follows:
Serial Port 1: PCMMC
SIO Protocol
Input, Carrier Detect, Optional, Replacing DSR sometimes
Input, Received Data, Essential
Output, Transmitted Data, Essential
Output, DTE Ready, Essential
Signal Ground, Reference, Essential
Input, DCE Ready, Essential, Replaced with DCD sometimes
Output, Request to Send, Optional
Input, Clear to Send, Not Connected
Ring Indicator, Not Connected
Serial Port 2 : SMDR
1 Start bit, 8 data bits, 1 Stop bit, No parity
9600 Baud rate, No DSR check, 3 times retry
7-8
Installation
February, 1999
FIGURE 7-8