2 – 18
Remote Operation
The complete list of commands available while in Compatibility
Mode is as follows:
ASCII byte
Symbol
Decimal
Command
@
64
Open channel 1
A
65
Close channel 1
B
66
Open channel 2
C
67
Close channel 2
D
68
Open channel 3
E
69
Close channel 3
F
70
Open channels 1-4
G
71
Close channels 1-4
H
72
Open channel 4
I
73
Close channel 4
Z
90
Exit compatibility mode
Control bytes in compatibility mode are acted upon immediately.
(Command terminators such as
CR
are ignored.) Compatibility
mode, as set by
COMP 1
, will be cancelled by power cycling the
SR474. If compatibility mode is desired at turn-on, it can be enabled
with the
IFCF
command.
Ethernet MAC Address
EMAC?
Query the SR474’s ethernet MAC address.
Ethernet Physical Layer Configuration
EPHY(?)
i
{
,j
}
Set (query) the physical configuration item
i
{
to
j
}
. The parameter
i
may be one of the following:
i
Configuration
0
Enable
/
disable Auto-negotiation of link
speed
1
Set link speed to 10 Base-T or 100 Base-T
When auto-negotiation is enabled, the manual link speed selection
is ignored. When auto-negotiation is disabled, the manual speed
selection is used to configure the link. Under certain circumstances
the auto-negotiation of link speed may fail. To avoid this, the SR474
defaults to manually configured 100 Base-T link speed. When setting
the link speed, a value of
j
equal to 0 selects 10 Base-T, and a value
of 1 selects 100 Base-T.
EPHYS0,0
CR
Example:
Disable auto-negotiation of link speed
EPHYS1,1
CR
Example:
Manually configure link for 100 Base-T operation
SR474 Four Channel Shutter Driver
