Siemens SIMATIC TIWAY 1 - Manual (Page 122)

HOST COMMAND SET REFERENCE
UNILINK HOST ADAPTER 5–37
USER MANUAL
5.4.9 Report Memory Usage — 18
The REPORT MEMORY USAGE command returns the number of bytes of
memory available for macro storage, the number of unused macro buffers, the
number of Source Id numbers remaining of the 32 limit, and a list of the active
Source Id numbers. This command can be issued at any time after the
CONFIGURE ADAPTER command has been issued.
Command: 18
Response: 18 mmmmmmmm nnnn ll ([ss])
Usage: OPERATION
Modes: MHIU, HIU
Parameters:
mmmm The number of memory bytes available for macro.
nnnn The number of macro buffers not yet allocated.
ll The number of Source Id numbers remaining from the limit of 32
active numbers.
ss The list of currently active Source Id numbers.