Christie DS Series Service Manual page 118

2. Response code / Error code ("h" shows hexadecimal)
The connection ID is attached for the TCP#23's response / error codes are
used. The connection ID is same as the sending command format.
(1) ACK reply: 06h + ××h
(2) NAK reply: 15h + ××h
(3) Error reply: 1Ch + 0000h + ××h
(4) Data reply: 1Dh + xxxxh + ××h
(5) Authentication error reply: 1Fh + 0400h + ××h
(6) Projector busy reply:
When the projector is too busy to receive the command, the projector returns
the error code.
In such a case, check the sending code and send the same command again.
Automatic Connection Break
The TCP connection is automatically disconnected after there is no communication
for 30 seconds after being established.
Authentication
The projector does not accept commands without authentication success
when authentication is enabled. The projector uses a challenge response type
authentication with an MD5 (Message Digest 5) algorithm.
When the projector is connected to a LAN, a random 8 bytes is returned if
authentication is enabled. Bind this received 8 bytes and the authentication
password, and digest the data with the MD5 algorithm, and add it in front of the
commands to send.
The following is a sample of authentication process.
Authentication password: password (example)
Random 8 bytes: a572f60c (example)
1) Select a projector and receive the random 8 bytes from the projector.
"a572f60c"
2) Bind the random 8 bytes and the authentication password.
"a572f60cpassword"
3) Digest this bound with MD5 algorithm.
"e3d�742�ad�a11bce1f7275813d4bde"
4) Add this code in front of the commands and send the data.
"e3d�742�ad�a11bce1f7275813d4bde" � �command�.
5) When the sent data is correct, the command is performed and the reply data is
returned. Otherwise, an authentication error is returned.
NOTE • As for the transmission of the second or subsequent commands, the
authentication data can be omitted for the same connection.
LWU900-DS/LHD878-DS/LWU755-DS
User's Manual - Technical
nued) Network Bridge Communication
Network Bridge Communication
re
This projector is equipped with NETWORK BRIDGE function.
When the projector connects to the computer by wired or wireles LAN
communication, an external device connected with this projector by RS-232C
communication can be controlled from the computer as a network terminal.
For details, see the 7� Network Brid�e function in the Network Guide.
NOTE • If data is transferred using wireless and wired LAN at the same time,
the projector may not be able to process the data correctly.
returns
Connection
again.
1. If you use wired LAN or HDBaseT, connect the computer's LAN port and
the projector's LAN or HDBaseT port with a LAN cable. Use the cable that
ful� lls the speci� cation shown in � gure. If you use wireless LAN, insert the USB
nication
wireless adapter into the projector's WIRELESS port.
Connect the projector's CONTROL port and the RS-232C port of the devices
2.
that you want to control with a RS-232C cable.
Turn the computer on, and after the computer has started up turn the
3.
projector on.
ype
Set the COMMUNICATION TYPE to NETWORK BRIDGE in the
4.
COMMUNICATION menu of the OPTION - SERVICE menu.
n
f the
data is
, the
v. 1 (12-2018) LWU900-DS/LHD878-DS/LWU755-DS
Series TECH User's Manual - Technical
LWU900-DS/LHD878-DS/LWU755-DS
Service Manual
LWU900-DS / LHD878-DS / LWU755-DS
Command Control via the Network (continued)
(××h : connection ID)
1Fh + ××××h + ××h
23
USB wireless adapter
WIRELESS port
LAN
LAN or
HDBaseT port
LAN cable
(CAT-5e or greater)
RS-232C
24
Network Bridge Communication
Network Bridge Communication
This projector is equipped with NETWORK BRIDGE function.
When the projector connects to the computer by wired or wireles LAN
communication, an external device connected with this projector by RS-232C
communication can be controlled from the computer as a network terminal.
For details, see the 7� Network Brid�e function in the Network Guide.
NOTE • If data is transferred using wireless and wired LAN at the same time,
the projector may not be able to process the data correctly.
Connection
If you use wired LAN or HDBaseT, connect the computer's LAN port and
1.
the projector's LAN or HDBaseT port with a LAN cable. Use the cable that
ful�lls the speci�cation shown in �gure. If you use wireless LAN, insert the USB
wireless adapter into the projector's WIRELESS port.
Connect the projector's CONTROL port and the RS-232C port of the devices
2.
that you want to control with a RS-232C cable.
Turn the computer on, and after the computer has started up turn the
3.
projector on.
Set the COMMUNICATION TYPE to NETWORK BRIDGE in the
4.
COMMUNICATION menu of the OPTION - SERVICE menu.
020-001583-01 Rev. 1 (12-2018) LWU900-DS/LHD878-DS/LWU755-DS
LIT MAN USR DS Series TECH User's Manual - Technical
RS-232C cable
(cross)
020-001583-01 Rev. 1 (12-2018)
LIT MAN USR DS Series TECH
117
USB wireless adapter
WIRELESS port
LAN
LAN or
HDBaseT port
LAN cable
(CAT-5e or greater)
RS-232C
24
020-001586-01 Rev. 1 (02-2021)
LIT MAN SERV DS Series
RS-232C cable
(cross)
020-001583-01 Rev. 1 (12-2018)
LIT MAN USR DS Series TECH