Siemens SINUMERIK 808D ADVANCED Commissioning Manual

Commissioning Manual
01/2017
163
Constant definition
Constant input
Symbol
Address
Constant "1"
ONE
SM0.0
Constant "2"
ZERO
M251.0
Zero output definition
Data type
Symbol
Address
bit
NULL_b
M255.7
byte
NULL_B
M255
word
NULL_W
M254
double-word
NULL_DW
M252
Structure of symbol tables
All the addresses in the PLC subroutine library are programmed with symbols. All the signals of interfaces are named by
symbols and arranged in different symbol tables.
The name of a symbol follows some conventions. For details, see Section "Conventions for the symbols used in the
subroutines (Page 165)".
Symbol table
Table name
Descriptions
1 IO_1 Module I/O are defined by the manufacturer
2
IO_2
Distributed I/O are defined by the manufacturer
3, 5, 7, 13
Reserved for the manufacturer
6
MANMACH
JOG function
14
ASUP
ASUP function
15
PLC_sel_PP
PLC selects part programs
16
IS_MCP
Signals from/to the MCP
17
IS_HMI
Signals from/to the HMI
18
IS_AUX
Auxiliary functions from the NCK
19
IS_NCK
Signals from/to the NCK
20
IS_CHA
Signals from/to the channel
21
IS_AX1
Signals to/from axis 1
22
IS_AX2
Signals to/from axis 2
23
IS_AX3
Signals to/from axis 3
24
IS_AX4
Signals to/from axis 4
27
MD_PLC
PLC machine data
28
ALARM
User alarms
29
NV_MEM
Non-volatile memory
30
SPC_MEM
Special memory bit
31 SBR_MEM Global memory used in the sample applications and subroutines
32
RESVD1
Reserved for the sample applications and subroutines

Siemens SINUMERIK 808D ADVANCED Specifications

General

Brand	Siemens
Model	SINUMERIK 808D ADVANCED
Category	Control Unit
Language	English