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Panasonic BT-LH2170E Manual De Usuario

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63
REMOTE Specifications 
(continued)
RS-485 input/output terminal
The RS-485 interface enables external operations.
The figures below show RS-485 input/output terminal pin arrangement and connections.
TSL protocol version 3.1 and 4.0 are supported. Make sure that the same TSL protocol versions are used on external control devices 
and the monitor.
For information on specific systems using RS-485 input terminals, contact your supplier.
Connection example
External
control device
RS-485 IN      RS-485 OUT
RS-485 IN      RS-485 OUT
RS-485 IN      RS-485 OUT
• A loop-through connection using the RS-485 input and output terminals allows operation of multiple monitors (up to 32 monitors).
• Connect a terminator (120 Ω) between the first and second pin of the OUT terminal on the last monitor in the chain.
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„
Connectors and signals
Connector: 8-pin RJ-45 connector
IN  
1
2
3
4
5
6
7
8
                OUT  
1
2
3
4
5
6
7
8
Pin number
Signal
Description
IN (input)
OUT 
(output)
1
3
RXD+
Received data (+)
2
6
RXD-
Received data (-)
3
1
TXD+
Send data (+)
4
4
N.C.
Not connected
5
5
N.C.
Not connected
6
2
TXD-
Send data (-)
7
7
N.C.
Not connected
8
8
GND
Ground
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„
Communication parameters
Synchronous system Asynchronous system
Transfer rate
38,400 bps
Parity
EVEN
Data length
8 bit
Stop bit
1 bit
Flow control
None
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„
Command format
STX (02h) Header (ID) Command
Data
EXT (03h)
The header (ID) is 8-bit data.
Use the [RS-485 ID SETUP] function in the [SYSTEM CONFIG] 
menu to set up.
Setting the most significant bit on an external control device 
allows you to switch between TSL protocol support and “Setting 
command” (→page64)/“Query commands” support (→page 67).
Example:  RS-485 ID SETUP  31 setting  (hexadecimal conver-
sion) 
 Header 1Fh (for support of commands listed below)
Header 9Fh (for TSL protocol support)
When 0 is set in [RS-485 ID SETUP], multiple monitors can be 
controlled.
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Response formats
1. 
Setting command response
STX (02h)
Command
EXT (03h)
2. 
Query command response
STX (02h)
Data
EXT (03h)
3. 
Error response
STX (02h)
Error codes
EXT (03h)
Error codes
ER001: Invalid command
ER002: Parameter error
When 0 is set in [RS-485 ID SETUP], operation is enabled 
but responses are not.
After receiving a monitor response command, there should be 
a time lag of approx. 200 ms before a command is transmit-
ted from an external control device.