2 Product description
2.2 Function parameterization
XI/ON: XNE-1SWIRE
09/2011 MN05002016Z-EN
www.eaton.com
13
2.2.2
Activate and deactivate PLC configuration check
During the PLC configuration check, the configuration stored in the XNE-1SWIRE is
compared with the SET configuration stored in the PLC. The complete device ID
must match. If the two configurations match completely, the entire SWIRE bus is
ready for data exchange (RDY LED lit). If the two configurations do
not
match, the
system responds according to other parameter settings (see Chapter 2.2.4 System
behavior with negative configuration checks and slave failure, Page 14).
PLC configuration
check active (default
setting)
Parameter setting:
•
PROFIBUS-DP and CANopen (Byte 1):
• Configuration = 0 (MXpro: «configuration check PLC» = activate)
•
DeviceNet (Attribute 121 (79
hex
) «PARAM_COMMON_OERATION_MODES»):
• Bit 2 = 0
PLC configuration
check inactive
Parameter setting:
•
PROFIBUS-DP and CANopen (Byte 1):
• Configuration = 1 (MXpro: «configuration check PLC» = deactivate)
•
DeviceNet (Attribute 121 (79
hex
) «PARAM_COMMON_OERATION_MODES»):
• Bit 2 = 1
2.2.3
System behavior with positive configuration checks
1
The physical structure of the SWIRE bus is scanned on power up and compared
with the configuration stored in the XNE-1SWIRE (SW LED flashing).
• The SWIRE bus starts operation (SW LED lit) if the physical structure of the
SWIRE bus matches the SWIRE configuration stored in the XNE-1SWIRE.
2
If the PLC configuration check is activated, the configuration stored in the XNE-
1SWIRE is compared with the SET configuration stored in the PLC. The
complete device ID must match.
• If the two configurations match completely, the entire SWIRE bus is ready for
data exchange (RDY LED lit)
3
The system then starts data exchange.
4
The physical structure of the SWIRE bus is monitored continuously during oper-
ation so that any changes on the bus or slave failures can be detected.