![Communications Option Board](/images/new-backgrounds/72590/7259057x1.webp)
SECTION 6
Communications Option Board
Both
6.1RS-232-E Interface Specifications
Format | EIA standard |
Data Rate | 9600 baud |
Character Length | Eight data bits |
Parity | No parity |
Stop bits | One stop bit |
A common application of the RS232 version of the
Figure 6.1
manner shown below.
PIN | MNEMONIC | SIGNAL | DESCRIPTION |
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2 | TX | Transmit Data | Transmits data within |
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3 | RX | Receive Data | Accepts data within |
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5 | SG | Signal Ground | Establishes the common ground reference |
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| potential for all interchange circuits |
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when |
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| communicating via RS- |
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4 | CTS | Clear to send | Host computer ready to accept data. (Reserved |
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| for future use, not implemented by present |
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| software. |
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8 | RDY | Ready | Ready to receive data (always high, not |
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| implemented by present software. |
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| Model 2002 page 29 |