WAGO-I/O-SYSTEM 750 XTR
Process Image 39
750-404/040-003 Counter Adjust XTR
Manual
Version 1.1.0
Exceeding the Maximum Frequency Range
If the maximum frequency range is exceeded, the counter module returns the
invalid value 0xFFFFFFFF
Setting the watchdog time:
A watchdog timer is implemented for detecting statistical CLOCK signals.
The default value for the time is 10 s. The time is reinitialized at each power-on.
The application can change the watchdog time during operation via the control
byte.
This process is started by writing the respective value to output bytes D1 and D0
before the “T
VD
_REQ” bit is written to the control byte. A successful parameter
transfer is confirmed by the T
VD
_ACK bit in the status byte.
Watchdog Timer Value Range
The watchdog timer value range is from 0 to 16383 ms (0x0000 … 0x3FFF) in
steps of 1 ms per digit.
Values outside the permitted watchdog timer range are identified with 0x3FFF.
Setting Outputs:
Control byte bits 2 and 3 set the digital outputs “DO 1” and “DO 2.”
4.2
Up, Up/Down or Peak Time Counter
In operating modes “Up Counter,” “Up/Down Counter” and “Peak Time Counter,”
the 750-404/040-003 I/O Module provides the fieldbus coupler/controller with 5-
byte in- and output process images via two logical channels.
The counter setting value to be set is stored in binary format in the four output
bytes (D0 ... D3). The counter status is stored in binary format in the four input
bytes (D0 ... D3). Control byte C0 is used to set the counter and the outputs.
Status byte S0 contains the statuses of the counter and the inputs and outputs.
Table 27: Overview of the Input and Output Data in Operating Modes “Up Counter,” Up/Down
Counter” and “Peak Time Counter”
Input Data
Output Data
S0
Status byte
C0
Control byte
D0
Counter value byte 0 (LSB)
D0
Counter setting value byte 0
(LSB)
D1
Counter value byte 1
D1
Counter setting value byte 1
D2
Counter value byte 2
D2
Counter setting value byte 2
D3
Counter value byte 3 (MSB)
D3
Counter setting value byte 3
(MSB)
