Siemens SPC3 用户手册
PROFIBUS Interface Center
SPC3
Page 64
V1.3
SPC3 Hardware Description
2003/04
Copyright (C) Siemens AG 2003. All rights reserved.
12 Appendix B: Useful Information
12.1 Data format in the Siemens PLC SIMATIC
The SPC3 always sends data from the beginning of the buffer till the end. 16Bit values are shown in the
Motorola format. For example:
Buffer pointer
Motorola format. For example:
Buffer pointer
high byte
Buffer pointer +1
low byte