Siemens SINUMERIK 828D

7.9.4.2 Diagnostics via input image
Table 7-108 Diagnostics input image
Byte Bit7 Bit6 Bit5 Bit4 Bit3 Bit3 Bit1 Bit0
d+0 count_2 count_1 count_0 T_Alarm_2 T_Alarm_1 Diag_2 Diag_1 Diag_0
d+1 Status_1
Table 7-109 Messages in byte 0
Bit Signal name Message
7 count_2 alive and well 2
6 count_1 alive and well 1
5 count_0 alive and well 0
4 T_Alarm_2 Temperature not within the operating temperature range defined for the
module
3 T_Alarm_1 Critical temperature exceeded
2 Diag_2 Overload DO byte 5/4
1 Diag_1 Overload DO byte 3/2
0 Diag_0 Overload DO byte 1/0
Note
The "alive and well" counter is a 3 bit modulo counter on a PP application level. The PP
application can be monitored using this counter. Failure of the application software does not
generally result in a communication failure, as this is developed in a hardware-supported
manner. The watch dog switches off the digital outputs, while the inputs remain at their last
set values.
Table 7-110 Overview of messages as a function of the "alive and well" counter
"alive and
well" counter
Value
byte 1
Message
0 0 Reserved
1 Temperature value
2 0 No error
1 Impermissible input voltage in temperature measurement mode
2 Reserved
3 Overload at the outputs
4 Incorrect operating mode selection
5 Internal error, system error
6 Overrange at the inputs
7 Overrange at the outputs
3 ... 7 0 Reserved
Anschließbare Komponenten
7.9 PP 72/48D 2/2A PN
PPU and components
Manual, 05/2015, 6FC5397-2DP40-3BA4 235