Messages 17 To - Siemens SIMATIC S5 Manual

2.5 Messages 17 to 21

The numerical representation of messages 17 to 21 is determined by the main control byte 1,
bit 6 (BCD/binary). Messages 17 to 21 can only be read.
Message 17
This message contains the actual temperatures of sensors 0 to 12 in degrees Celsius or in degrees
Fahrenheit (bytes 0 to 25) and the actual values of the voltage channels 13 and 14 (2048 units =
20.48 V) (bytes 26 to 29). Note the special function.
Fig. 2.5/1 Structure of message 17
(actual values)
IP244
C79000–B8576–C860–02
Data Exchange with the Central Controller
4–61