Endress+Hauser iTEMP TMT85, Руководство по эксплуатации

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iTEMP TMT85
Operation via FOUNDATION Fieldbus TM
Hauser 67
14.2.1 Selecting the operating mode
The operating mode is set via the MODE_BLK parameter group. The Resource Block
supports the following operating modes:
• AUTO (automatic mode)
• OOS (out of service)
• MAN (manual mode)
The 'Out Of Service' (OOS) mode is also shown via the BLOCK_ERR parameter. In the
OOS operating mode, you can access all the write parameters without restriction if
write protection is not enabled.
14.2.2 Block status
The current operating status of the Resource Block is shown in the RS_STATE parameter.
The Resource Block can adopt the following states:
• STANDBY
The Resource Block is in the OOS operating mode. It is not possible to execute the
remaining function blocks.
• ONLINE LINKING
The configured connections between the function blocks are not yet established.
• ONLINE
Normal operating mode, the Resource Block is in the AUTO (automatic) operating mode.
The configured connections between the function blocks have been established.
14.2.3 Write protection and simulation
Device parameter write protection and simulation in the Analog Input function block can
be disabled or enabled by means of DIP switches on the optional display.
The WRITE_LOCK parameter shows the status of the hardware write protection. The
following statuses are possible:
• LOCKED
= Device data cannot be changed via the FOUNDATION Fieldbus interface.
• NOT LOCKED
= Device data can be changed via the FOUNDATION Fieldbus interface.
The BLOCK_ERR parameter indicates whether simulation is active in the Analog Input
function block.
Simulation active
= DIP switch for simulation mode is active.
14.2.4 Alarm detection and processing
Process alarms provide information about certain block states and block events. The status
of the process alarms is communicated to the fieldbus host system via the BLOCK_ALM
parameter. The ACK_OPTION parameter specifies whether an alarm must be
acknowledged via the fieldbus host system. The following process alarms are generated by
the Resource Block:
Block process alarms
The following block process alarms of the Resource Block are shown via the BLOCK_ALM
parameter:
• OUT OF SERVICE
• SIMULATE ACTIVE
Write protect process alarm
If write protection is disabled, the alarm priority specified in the WRITE_PRI parameter is
checked prior to communicating the change of status to the fieldbus host system. The