
APPENDIX A.CONNECTOR PIN DEFINITIONS
CONNECTOR P2: RS-232  Configuration Connector (DB9) MIU
| DCD | 1 | data carrier detect | from | MIUXXX\485 | |
| RD | 2 | receive data | 
 | from MIUXXX\485 | |
| TD | 3 | transmit data | to | MIUXXX\485 | |
| DTR | 4 | data terminal ready | to | MIUXXX\485 | |
| GND | 5 | ground | 
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| DSR | 
 | 6 | data set ready | from | MIUXXX\485 | 
| RTS | 7 | request to send | to | MIUXXX\485 | |
| CTS | 8 | clear to send | from | MIUXXX\485 | |
| RI | 9 | ring indication | from | MIUXXX\485 | |
| PGND | shield | protective ground | 
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CONNECTOR P1: 
Interface to 4 positions Plug 
| TXY | 1 | transmit data (+) | from MIUXXX\485 module | |
| TXZ | 
 | 2 | transmit data  | from MIUXXX\485 module | 
| RX | 3 | receive data (+) | to MIUXXX\485 module | |
| /RX | 4 | receive data  | to MIUXXX/485 module | |
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MIUXXX/485 Installation, Operation & Diagnostics Edition: June 17, 2003
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