DISTRIBUTED I/O
3
EN0B-0090GE51 R0802
Table 3. Node Object network variables
NV Name
Type
Range
Description
nviRequest
SNVT_obj_request
RQ_NORMAL
RQ_DISABLE
RQ_ENABLE
RQ_UPDATE_STATUS
RQ_REPOPRT_MASK
RQ_SELF_TEST
Upon receiving an update to nviRequest, nvoStatus is
updated.
RQ_SELF_TEST is used only in the XFL522B analog
output module for outputs configured as a motor. In
this case, a synchronization is performed to set the
actuator in the 0% position.
nvoStatus
SNVT_obj_status
Reports the status of the node upon request through
nviRequest.
nciNetConfig
SNVT_config_src
CFG_LOCAL (default)
CFG_EXTERNAL
This configuration variable is set to CFG_LOCAL at
the factory and whenever the rotary HEX switch is
reset. If it is set to CFG_EXTERNAL, a network
manager will assign a network address for the node. In
this case, the module will not modify its location string
as long as the rotary HEX switch is not reset.
nvoFileDirectory
SNVT_address
Points to a file directory in the address space of the
Neuron® chip containing descriptors for the files in the
module. It is used to access the configuration pro-
perties stored in configuration parameter files
accessed by network management read/write
messages.
SCPTMinSendTime
SNVT_time_sec
1.0 to 10.0 sec
(default = 1.0 sec)
Defines the minimum period of time between output
variable transitions. This configuration property is
applicable only to output NVs of the input modules.
SCPTMaxSendTime
SNVT_time_sec
1.0 to 6553.4 sec
(default = 60.0 sec)
Defines the maximum time period of time before out-
put NVs are automatically updated. It must be set to a
higher number than SCPTminSendTime. This con-
figuration property is applicable only to output NVs of
the input modules.
XFL52xB Module Response Times
The
response time of Distributed I/O modules
is defined as
the period of time between the updating of the physical signal
and the updating of the NV (or vice versa). The response
time varies somewhat due to certain factors and is also
dependent upon the module type (see also Table 4).
Table 4. Response time (RT)
Module
Typical RT
(sec)
Max. RT
(sec)
Min. time between
2 updates
XFL521B
0.8
1.6
SNVTMinSendTime
(default: 1 sec)
XFL522B
0.2
0.4
n.a.
XFL523B
0.3
0.5
SNVTMinSendTime
(default: 1 sec)
XFL524B
0.2
0.4
not applicable
XSL511 Connector Module Power Supply
NOTE:
When connecting XFL52xB modules to the power
supply, the same side of the transformer must
always be connected to the same side of the
