Siemens SIMATIC TIWAY 1 - Manual (Page 43)

OPERATION AND APPLICATION
UNILINK HOST ADAPTER 2–33
USER MANUAL
The total macro memory requirements can be calculated by summing the
memory for each individual macro. For example, suppose that you use one
macro to connect secondary #7, another macro to issue a Primitive 45 bytes long
expecting a response 30 bytes long, and another macro to disconnect secondary
#5. The total memory required for these three macros is:
Macro #1, Connect = 22 = 22 22
Macro #2, Primitive = 22 + 45 + 30 = 97(+1) 98
Macro #3, Disconnect = 22 = 22 22
"""
Total Memory Required 142 Bytes
Example 2–2 Macro Memory Requirements
Host
Computer
UNILINK
TIWAY I
UniLink Host Adapter
Job Directory
Job A
Job B
Job C
Figure 2–15 Host Computer Multiprocessing Application
Example