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8.4 RS485 Interface
An RS485 Bus allows for multiple Iron SDI systems to be used simultaneously with a single RS485 Master controller;
please note that an RS485 to RS232 adapter must be used.
Commands can also be sent to a group of cameras at once as long as they are connected to the same RS485 bus.
To accommodate for this, each camera has a personal address and a broadcast address which can be set via the
rs485_addr
and
rs485_bc_addr
is used to communicate commands to a group.
Master and slave communication is commenced in the following command format for both individual and group
communication: <address> <command> <parameter>.
8.4.1 rs485_baud <baud_rate>
Sets the baud rate for the RS485 terminal interface. Possible baud rates are:
#
Baud Rate
1
9600
2
14400
3
19200
4
57600
5
115200 (defualt)
Remarks:
1. It is advised to leave the baud rate at 115200 (default) for faster device response.
2. Setting RS485 baud rate will also change the RS232 interface baud rate.
8.4.2 rs485_addr <address>
Sets the address for the RS485 interface. It is impossible to set the device's address to be the same as the broadcast
address, an attempt to do so will return "FAIL".
Value
Device Address
Remarks:
1. Make sure, that each address is unique on your RS485 bus system. Address conflicts can be checked and
resolved at any time via RS232 console, or by removing devices from the bus until the contention is solved.
2. Address 100 is reserved as a fail-safe address: all devices will always replay to commands sent over this address,
as if it was their current device address. This can be used to identify or change the device address if it has been
lost.
www.kayainstruments.com
commands, respectively. The former is used for individual control while the latter
Default
1
2 0 H a M e s i l a S t . , N e s h e r 3 6 8 8 5 2 0 , I s r a e l
P O B 2 5 0 0 4 ,
T e l : ( + 9 7 2 ) - 7 2 - 2 7 2 3 5 0 0 F a x : ( + 9 7 2 ) - 7 2 - 2 7 2 3 5 1 1
Minimal
0
Page no. 19 | Appendix No. 1
H a i f a 3 1 2 5 0 0 1 , I s r a e l
Maximal
99
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