Parameterizing The Period / Pulse Frequency; Register; Control- / Status Byte - WAGO 750 Series Manual

14 • 750-511, /000-002 [2DO 24V DC 0.1A / Pulse Width]

Parameterizing the Period / Pulse frequency

2.1.2.9 Parameterizing the Period / Pulse frequency
2.1.2.9.1

Register

Either the period or the basic frequency can be predetermined at any time by
the PLC (host) via 2 writeable, non-retentive registers (not protected against
voltage loss):
Register 2:
Register 3:
As soon as the basic frequency has been entered, the period is calculated
automatically and entered in register 2.
The modification effects both channels of the bus module.
Designation
Period of oscillation
Pulse frequency
Designation
Period of oscillation
Pulse frequency
The pulse width bus module loads the default values in the registers after
"power-on". The PLC (host) must take this case into account if the required
values differ from the default values.
2.1.2.9.2

Control- / Status byte

The PLC can read and set the registers via the control and status byte (C0, S0)
and the output bytes (D0, D1) in the process image.
The control byte is transferred from the PLC to the module and the status byte
from the module to the PLC.
A0, A1
W/R
REG
0
Period (16 bits)
Basic frequency (16 bits).
Register
Register
Bit 7 Bit 6 Bit 5
REG W/R
register address
write/read access
register communication
This constant must be set to zero.
Default-Value 750-511
Value
2 4000 µs
3 250 Hz
Default-Value 750-511/000-002
Value
2 10000 µs
3 100 Hz
Control byte 0
Bit 4 Bit 3
0 0 0
A0 = 0, A1 = 1: register 2
A0 = 1, A1 = 1: register 3
W/R = 0: read
W/R = 1: write
REG = 0: process data communication
REG = 1: register communication
Resolution Value Register
1 µs / Digit 4000 [0x0FA0]
1 Hz / Digit 250 [0x00FA]
Resolution Value Register
8 µs / Digit 1250 [0x04E2]
1 Hz / Digit 100 [0x0064]
Bit 2 Bit 1
0 A1
WAGO-I/O-SYSTEM 750
I/O Modules
Bit 0
A0