Assigning Parameters To The Analog Inputs / Outputs - Siemens Sinumerik 828D Manual

7.9.4.3

Assigning parameters to the analog inputs / outputs

Operating mode
Parameters are assigned to the operating mode via the m+0 byte (Analog Control Byte 0) of
the output image of the analog outputs:
Byte
m+0
m+1
m+2
m+3
The reserved bits must be preassigned with the value "0".
The operating mode is set to "no operating mode" during power-up, as soon as a valid setting
is made this will be applied and will subsequently no longer be reset. If a reset is initiated by
the user, this is interpreted as an error.
Type of control
The control type must be specified in the Analog Control Byte m+1 (bit 0), so that the 16 bit
input and output values from and for the analog module are correctly interpreted by the control.
In the SINUMERIK 828D control, the value "1" must be entered.
Note
The control type must be set prior to the operating mode so that the first set of user data is not
misinterpreted. In addition to this, the Analog Control Byte m+0 / m+1 must only be accessed
byte by byte.
Assigning parameters to the analog inputs
The analog inputs (AI) can be operated in the following operating modes:
Operating mode 1st channel
No operating mode
Voltage measurement
Current measurement
Temperature measurement (Pt100)
Operating mode 2nd channel
No operating mode
Voltage measurement
PPU and components
Manual, 05/2015, 6FC5397-2DP40-3BA4
Bit7 Bit6 Bit5
AO AO AO
(channel (channel (channel
4) 4) 3)
Anschließbare Komponenten
Bit4 Bit3 Bit3
AO AI AI
(channel (channel (channel
3) 2) 2)
Reserved
Reserved
Reserved
Bit 1
0
0
1
1
Bit 3
0
0
7.9 PP 72/48D 2/2A PN
Bit1 Bit0
AI AI
(channel (channel
1) 1)
Data for‐
mat
Bit 0
0
1
0
1
Bit 2
0
1
237