EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101GE51 R1105D 24
Controller Serial Port
Fig. 41. Serial port
The serial port has a 9-pin sub-D connector and has a default
communication speed of 9.6 Kbaud.
Table 23. Signals of serial port
signal type controller output controller input
Signal ground
Transmit x
Receive x
Carrier detect x
Clear to send x
Data terminal ready x
5 V x
MMI Connection
For direct communication the external operator interface
XI582 and the PC-based MMI XI584 can be connected to the
serial port.
When the cable from XI582 or XI584 is plugged in during
normal operation of an Excel 50 Controller with MMI, the
functionality of the Excel 50 MMI is disabled.
After unplugging the external MMI it takes up to 15 sec until
the local MMI activates again.
Cable Specifications
Ready-made cables with the shield already connected to the
computer module plug end are available for the connection of
external MMIs.
Table 24. Cable specifications
MMI type cable length
XI582 (remote MMI) XW 582 17 ft (5 m)
XI584 (PC-based MMI) XW 585 17ft (5 m)
For connection to the XI584, a standard null modem cable
may be used.
Fig. 42. MMI cable details
Modem or ISDN Terminal Adapter Connections
For remote communications, a modem or ISDN terminal
adapter can be connected directly to the serial port of all
Flash-EPROM versions of the Excel 50 Controller.
NOTE: Remote communication via modem or ISDN terminal
adapter requires firmware version 2.01.00 or higher.
SERIAL PORT
EXCEL 50 (REAR VIEW)
Fig. 43. Modem connection
The serial port of the Excel 50 controller accepts a standard
modem cable with a female 9-pin connector. Use the cable
that is supplied with the modem/ISDN terminal adapter.
The communication speed is 9.6 Kbaud by default but can be
set as high as 38.4 Kbaud.
For more details, see section "Remote Communication".
Changing Between MMI and Modem Connection
The XL50 will detect when an MMI or modem/ISDN terminal
adapter is connected and will adjust the communication
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