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5708009-C 4-39
Apex 1 to 5.5 kW Generator
RS-232, AE BUS HOST PORT CABLING REQUIREMENTS
The cabling requirements for the RS-232 and AE Bus requires a standard DB-9 male
to female extension cable.
COMMUNICATING THROUGH THE RS-232, AE BUS HOST PORT
The communications capability of the serial AE Bus Host port is limited to the
following parameters:
• RS-232 protocol
• Baud rate of 19.2 kbps
• Apex generator unit address of 1
• Odd parity
• One start bit, eight data bits, one stop bit
• Low-order bytes are transmitted before high-order bytes.
The time-out period for the Apex generator is factory set at 0.02 s (that is, no more
than 0.02 s can elapse between bytes, or the unit will reset and begin looking for a new
message packet). This value can be changed using command 40.
Table 4-4. RS-232, AE Bus Host Port Pin Descriptions
Signal
Pin
Name Description
1 RESERVED Reserved for future use
2 TXD RS-232 transmit data
3 RXD RS-232 receive data
4 RESERVED Reserved for future use
5 COM Data Common
6 RESERVED Reserved for future use
7 RESERVED Reserved for future use
8 RESERVED Reserved for future use
9 RESERVED Reserved for future use