10 FUNCTIONS
10.8 SIL2 A/D Conversion Function
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*1 For details on the safety special register (2nd module or later), refer to the following.
MELSEC iQ-R CPU Module User's Manual (Application)
• Output labels
(2) i_u8ADRcvTbl Safety communications
receive area
Word [unsigned] Valid device range The label sets the start device of the receive data
storage device (8 words) for the safety communication
setting.
(3) i_bUnitErrClear Module error clear Bit On or off Turn it on to clear the error that is currently occurring.
Turn it off after the error is cleared.
(4) i_bInitDiagSkip Start-up diagnostics skip
request
Bit On or off The label selects whether start-up diagnostics is to be
performed or not. This setting is valid only when the
safety operation mode of the SIL2 Process CPU is
TEST MODE. When the mode is other than TEST
MODE, the diagnostics is performed independent of
this setting.
• On: Start-up diagnostics is not performed.
• Off: Start-up diagnostics is performed.
No. Variable name Name Data type Default value Description
(5) o_bENO Execution status Bit Off On: The execution command is on.
Off: The execution command is off.
(6) o_u8ADSndTbl Safety communications
send area
Word [unsigned] 0 The label sets the start device of the send data storage
device (8 words) for the safety communication setting.
(7) o_bOK Normal completion Bit Off The on state indicates that the FB processing has been
completed successfully.
(8) o_bErr Error completion Bit Off The on state indicates that the FB processing has been
completed with an error.
(9) o_uErrId Error code Word [unsigned] 0 The error code is stored at error completion.
(10) o_w8ADVal Digital obtained value Word [signed] 0 Digital operation values obtained from the R60AD8-G
(Main) and the R60AD8-G (Sub) are averaged and
output. This label specifies a safety device area for the
CH1 output destination. For CH2 and subsequent
channels, 7 words of safety device areas are assigned
and numbered sequentially starting from the next area
of that specified for CH1.
Areas of 8 words are required as the output destination
regardless of the number of A/D conversion enabled
channels.
(11) o_uConnectSts External device
connection status
Word [unsigned] 0 The label indicates the connection status between the
R60AD8-G and a sensor.
b0 to b7 correspond to CH1 to CH8. b8 to b15 are not
used.
• On: Connected
• Off: Disconnected
(12) o_u8DiagCode Status code Word [unsigned] 0 A status code for each channel is stored. This label
specifies a safety device area for the CH1 storage
location. For CH2 and subsequent channels, safety
device areas are assigned and numbered sequentially
starting from the next area of that specified for CH1.
Areas of 8 words are required as the storage location
regardless of the number of A/D conversion enabled
channels.
(13) o_stNFB_ADConv Standard/safety shared
output data
Structure Data from a SIL2 safety program FB to a SIL2 standard
program FB is stored. For labels to be specified, refer
to the following.
Page 256 Standard/safety shared label definition
No. Variable name Name Data type Scope Description
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