Remote Communications; Modem Or Isdn Terminal Adapter Connections; Modem Requirements; No Set-Up For Standard Modem Behavior - Honeywell Excel 500 Installation Instructions Manual

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REMOTE COMMUNICATIONS

The following applies to the XC5010C and XCL5010, only.
For remote communications with up to three XBS Building
Centrals, a modem or ISDN terminal adapter can be
connected directly to the serial port of the XC5010C CPU
(either front or rear connection) or the serial port of the
XCL5010.
NOTE: Remote communication via modem or ISDN terminal
adapter requires firmware version V2.1.0 or higher.
NOTE: XBSi building supervisors are not supported for
remote communication.
Modem or ISDN Terminal Adapter
Connections
The front serial port of the XC5010C CPU accepts a standard
modem cable with a female 9-pin connector.
Fig. 92. Serial port locations on Excel 500
Use the cable that is supplied with the modem/ISDN terminal
adapter. To connect to the terminals of the rear serial port of
the XC5010C, use cable XW571 (length: 6 ft (1.9m)).
Table 25. XW571 Connection
Pin XC5010C
RS232 signal
2
RTS
3
GND
4
TxD
5
RxD
6
CTS
7
DTR
8 (not used)
SG
9
DCD
10
Shield
11 (not used)
RI
NOTE: Pin numbers shown are for the rear connector of the
XC5010C Computer Module.
Wire color
Blue
White
Yellow
Green
Violet
Black
White
Brown
Clear
Red
43
EXCEL 500/600 INSTALLATION INSTRUCTIONS
The serial port of the XCL5010 CPU accepts a standard
modem cable with a female 9-pin connector.
Fig. 93. Serial port location on Excel 500-XCL5010
Use the cable that is supplied with the modem/ISDN terminal
adapter. The communication speed is 9600 baud by default
but can be set as high as 38.4 Kbaud.
NOTE: See section "Serial Port" on page 32, for signals of
serial port.

Modem Requirements

• Modem must support Hayes compatible command set (not
V150 or V151 = Microsoft command set)
• Modem must support alpha-numeric return codes
• Modem must follow serial baud rate of the CPU
• Modem must support auto-bauding (baud rate fall-back)
• When carrier detect (connect) is reported, the carrier must
be on simultaneously at both modems (on CPU side and
on XBS side)
use same modem
• After a switch-ON of the DTR line by the CPU or XBS, the
modem must accept a dial command after 3 seconds
• Modem must answer AT commands in less than 3
seconds

No Set-up for Standard Modem Behavior

If no special modem behavior is required, there is no need to
set up or initialize the modem/ISDN terminal adapter. The
XC5010C/XCL5010 CPU will automatically detect the device
(MMI or modem) attached to the serial port and set the
appropriate communication speed. The controller will also
automatically adapt to alphanumeric return codes used by the
modem. This automatic detection and adjustment can take up
to 5 seconds.
NOTE: It is highly recommended to use a state-of-the-art
modem and leave it in its factory setting.
EN1R-1047GE51 R0702

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