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

Assigning parameters

6.3 Assigning parameters to the analog inputs / outputs

6.3 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.
NOTICE
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.
40
Bit7 Bit6 Bit5
AO AO AO
(channel (channel (channel
4) 4) 3)
Bit4 Bit3 Bit3
AO AI AI
(channel (channel (channel
3) 2) 2)
Reserved
Reserved
Reserved
Bit1 Bit0
AI AI
(channel (channel
1) 1)
Data
format
PP 72/48D 2/2A PN I/O module
Manual, 03/2010