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Figure A-9. Complex System Configuration Using the Isolated Repeater/Converter...............................A-15
Figure A-10. Cable A; RS-232 Device To Converter................................................................................A-16
Figure A-11. Cable B; RS-422 Device to Converter .................................................................................A-16
Figure A-12. Cable C; RS422 Twisted Pair...............................................................................................A-17
Figure A-13. Cable D; RS422 Twisted Pair ..............................................................................................A-18
Figure A-14. Cable E; RS-232 Converter to CMM...................................................................................A-19
Figure A-15. Workmaster II (25-pin Serial Connection to Series 90 PLCs) .............................................A-20
Figure A-16. IBM-AT (compatibles) Personal Computer to Series 90 PLCs ...........................................A-20
Figure A-17. Workmaster or IBM-XT (compatibles) Personal Computer to Series 90 PLCs .................A-21
Figure A-18. Typical RS-422, Host to PLC Connection, with Handshaking ............................................A-22
Contents
GFK-0529C Contents xi
Table 2-1. Series 90 PLC Timer Defaults......................................................................................................2-3
Table 3-1. Series 90 Protocol (SNP) Message Format ..................................................................................3-1
Table 3-2. Attach Message (Master-Only) Format........................................................................................3-4
Table 3-3. Attach Message Example .............................................................................................................3-5
Table 3-4. Attach Response (Slave-Only) Message Format..........................................................................3-5
Table