3.1.12. INTERLOCK Command

The INTERLOCK command allows to configure the external interlock inputs that are present on the unit’s back panel.

In case of an external interlock trigger, the output is disabled (see the Power Supply Finite State Machine chapter) and the fault is reported in the Fault Register.

The interlock command allows to:

enable/disable interlock detection
set interlock polarity (direct- detect interlock when it is high; inverse - detect interlock when it is low)
change the related interlock name (name associated to the interlock)
set intervention time

The detecting logic for a single interlock is represented in the following figure:

The interlock intervention time specifies how much time the interlock condition should be valid in order to trip the interlock fault. It is also possible to set the intervention time to 0 -> in this case the fault trips immediately, when an interlock condition is detected.

Command Format:

R/W	Command	Response	Description
R	INTERLOCK:NUM:?	#INTERLOCK:NUM:<int_num>	Return the number of available interlocks on the unit
R	INTERLOCK:ENABLE:?	#INTERLOCK:ENABLE:<enable>	Return the interlock’s enable mask
W	INTERLOCK:ENABLE:<enable>	#AK / #NAK	Set the interlock’s enable mask
R	INTERLOCK:ENABLE:<id>:?	#INTERLOCK:ENABLE:<id>:<0\|1>	Verify the enable status of the single interlock at the specified id
W	INTERLOCK:ENABLE:<id>:<0\|1>	#AK / #NAK	Enable the the single interlock at specified id
R	INTERLOCK:POLARITY:?	#INTERLOCK:POLARITY:<polarity>	Return the interlock’s polarity mask
W	INTERLOCK:POLARITY:<polarity>	#AK / #NAK	Set the interlock’s polarity mask
R	INTERLOCK:POLARITY:<id>:?	#INTERLOCK:POLARITY:<id>:<0\|1>	Verify the polarity status of the single interlock at specified id
W	INTERLOCK:POLARITY:<id>:<0\|1>	#AK / #NAK	Select the polarity of the single interlock at the specified id
R	INTERLOCK:HARD:?	#INTERLOCK:HARD:<direct>	Return the interlock’s direct mask
W	INTERLOCK:HARD:<direct>	#AK / #NAK	Set the interlock’s direct mask
R	INTERLOCK:HARD:<id>:?	#INTERLOCK:HARD:<id>:<0\|1>	Verify the hard status of the single interlock at the specified id
W	INTERLOCK:HARD:<id>:<0\|1>	#AK / #NAK	Select the hard of the single interlock at the specified id
R	INTERLOCK:NAME:<id>:?	#INTERLOCK:NAME:<id>:<name>	Read the name of the interlock at the specified id
W	INTERLOCK:NAME:<id>:<name>	#AK / #NAK	Write the name of the interlock at the specified id
R	INTERLOCK:TIME:<id>:?	#INTERLOCK:TIME:<id>:<time>	Read the intervention time of the interlock at the specified id
W	INTERLOCK:TIME:<id>:<time>	#AK / #NAK	Write the intervention time for the interlock at the specified id

Parameter(s):

Name	Type	Description
<int_num>	integer string	Integer that specifies the number of available interlocks (for example “4”)
<id>	integer string	Indicates the id of the interlock, for example 1 -> indicates interlock #1, 2 -> interlock #2 etc.
<enable>	hex string	Hex string that indicates the enable status for all the interlocks (1 - enabled; 0 - disabled)
<polarity>	hex string	Hex string that indicates the polarity status for all the interlocks (1 - direct polarity; 0 - inverse polarity)
<direct>	hex string	Hex string that indicates the direct status for all the interlocks (1 - hard; 0 - soft)
<name>	string	String associated to specified interlock
<time>	integer string	Intervention time, that is associated to the specified interlock. The time is specified in [ms] in the range [0,10000].

Tip

The enable, polarity and direct are represented by a hex mask. For example if the enable is 0xB -> in binary: b’1011 -> it means that interlock #4, #2 and #1 are enabled and the interlock #3 is disabled. The same for the polarity, so for example if the polarity is 0x3 -> in binary: b’11 -> it means that interlock #2 and #1 use direct polarity and the interlock #3 and #4 use inverse polarity.

Tip

The interlock name (name) is associated the interlock, that is visualized on the local display and on the integrated web interface in case of interlock.