SMAR HI302, User Manual

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Operation
5 . 2
H1 LED
This LED indicates that an activity is going on in the Fieldbus Communication. At each
information package sent by the HI302, the LED will blink. If the LED doesn’t blink, it
indicates that the HI302 is not communicating with the net. Switch off the HI302 and
restart it a few minutes later. If it doesn’t return to the “LIVE LIST” after a few minutes, try a
“FCT INIT”. If this step fails, send the HI302 to maintenance.
CH#1 to CH#8 LEDs
These LEDs indicate the situation on every HART channel, under the following statuses:
•
Unlit : the channel is active but there is no HART communication. The devices of the
channel may have problems or their blocks are in OS mode. Check the devices and
the block configuration.
•
Lit : indicates the HART communication is deactivated (the COMM_ENABLE
parameter in the HCFG block is at FALSE). This may happen in two situations:
•
“On line” configuration alteration of channels or devices;
•
Creation or exclusion of blocks.
•
Blinking regularly and fast (2Hz) : indicates that the HI302 hasn’t received the
minimum configuration yet, that is, the HCFG block hasn’t been found.
•
Blinking regularly and slow (1/4 Hz) : the channel is deactivated because there is no
HIRT configuration using it.
•
Blinking irregularly : In this status the LED blinks according to the HART rate of
messages sent to the channel. If it remains unlit for too long, means the device may
have problems or the configuration may be wrong. See the BLOCK_ERR and
BLK_ERR_STATE parameter of each HIRT block.
Understanding the HART Communication
To follow the Communication operations performed by the HI302, the user should
understand the diagnostic parameters.
BLK_EXEC_STATE parameter
The BLK_EXEC_STATE may assume the following values:
•
0x00: IDENTIFICATION, means the device is under an identification process or the block
communication is stopped (MODE_BLK = OS).
•
0x01: OLD DATA, only valid for HIRT blocks. It means the block detected an HART
device alteration. Send the command HART38 to reset the alteration flag in the device
configuration. If the HI302 sent the writing, the block goes to UPDATED. If the writing
comes from an external source, the IDENTIFICATION and UPDATING process restarts.
•
0X02: UPDATING, the block is being updated, that is, the HART commands are being
sent and the information is not valid for reading. The supervisory software should wait until
the blocks become UPDATED.
•
0X03: UPDATED, if the commands were sent successfully, the block assumes this status.
To ensure that the polling and the automatic update work properly, the block should be at
this status. If the block is at another status, check the device configuration, the HART
commands used, etc.