Basic Operations; Common Operations Of Rs-232C/422A; Pj Com Operations - Sony VPL-FE100U Protocol Manual

5.

BASIC OPERATIONS

5-1. COMMON OPERATIONS OF RS-232C/422A

RS-232C and RS-422A use the same port. Transmission and reception are performed only for the TX line
and RX line in the case of softwares using the same commands (based on the software conditions).
Handshaking normally established by RS-232C is therefore not performed.

5-2. PJ COM OPERATIONS

PJ COM is a port specially developed for projector based on RS-485. It therefore has no compatibility
with the commercially available RS-485. (Special uses only)
PJ COM is a half duplex communication composed of the data line and control line. The control line is
normally called as busy line, indicating whether the PJ COM line is available for use. Transmission is
performed only when this line is free. If in use, data is transmitted to the Data line.
5-3. BASIC OPERATIONS
Transmission and reception by RS-232C/422A and PJ COM are performed using the same protocols. The
data received by RS-232C/422A is input to the unit once to confirm that there are no errors in the data,
and it is then transmitted to PJ COM again. Basic operations at PJ COM are the same. The data input to
the unit once is checked that there are no errors, and is transmitted to RS-232C/422A again. The unit
serves as a communication bridge.
VPL-FE100U/FE100E/FE100M
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