turck BL20 Series - Page 371

369
2020/09
3 Process output data with parameter values for:
Integration time
m = Offset of output data; depending on extension of station and the corresponding fieldbus.
Data Byte Byte DP/
PN
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Output m m + 7
Integration time
m + 1 m + 6
m + 2 m + 5
reserved
m + 3 m + 4
Control m + 4 m + 3 EXTF_
ACK
reserved CTRL_
DO1
SET_
DO1
RES_
STS
res. SW_
GATE
m + 5 m + 2 reserved LOAD
_DO_
PARA
M
res. LOAD
_INT-
TIME
LOAD
_UP-
LIMIT
LOAD
_LO-
LIMIT
m + 6 m + 1
reserved
m + 7 m
Bit Description
MODE_DO1 MODE_DO1 is only valid, if LOAD_DO_PARAM: 0  1. The physical output DO1 can show
the status of the data bit SET_DO1 or comparison results if CTRL_DO1 = 1.
MODE_DO1 defines which function DO1 is to accept:
– 00: The output DO1 shows the status of the control bit SET_DO1.
– 01: The output DO1 indicates a measurement outside of the limits, i.e. above the upper
measuring limit or below the lower measuring limit. STS_OFLW = 1 or STS_UFLW = 1
(process input).
– 10: Output DO1 indicates a value below the lower measuring limit. STS_UFLW = 1
(process input)
– 11: Output DO1 indicates a value above the upper measuring limit. STS_OFLW = 1
(process input)
EXTF_ ACK Error acknowledgment:
The error bits must be acknowledged with the control bit EXTF_ACK after the cause of the
fault has been rectified. This control bit must then be reset again. Any new error messages
are not set while the EXTF_ACK control bit is set!
CTRL_DO1
– 0: The output DO1 is blocked.
– 1: The output DO1 is released.
SET_DO1 If CTRL_DO1 = 1 and the physical output DO1 is set to indicate the value SET_DO1, DO1
can be set and reset directly with SET_DO1.
DO1 can be set for this function via the process output (MODE_DO1 = 00 and
LOAD_DO_PARAM 0  1).
The output DO1 can also be set before commissioning via the separate parameter data.
The default setting for DO1 is to indicate the status of SET_DO1.
RES_STS 0  1 Initiate resetting of status bits. Status bits STS_UFLW, STS_OFLW, and STS_CMP1
(process input) are reset. Bit RES_STS_A = 1 (process input) acknowledges that the reset
command has been received.
RES_STS can now be reset to 0.
SW_GATE 0  1 Measuring is started
(software release).
1  0 Measuring is stopped.