9 supervisory message block (sm) – Micromod MOD: 1800P - MOD 30ML Identity Module (Version 2) Algorithms, Tables and Sequential Logic Functions User Manual
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Logic Functions - Book 2
SUPERVISORY MESSAGE BLOCK
8-75
8.9
SUPERVISORY MESSAGE BLOCK (SM)
The supervisory message block is used to send a single, logic or manually initiated, message
over the ICN, or internally (within the MODCELL unit) to an addressable attribute. This block
can be used to send any one of the following types of messages to the specified instrument
types:
Message Type
Instrument Types
Read
All instruments
Read with Quality
MODCELL only
Write
All instruments
Set
MODCELL only (within instrument)
Tune
Any instrument except MODCELL (CTRL, REC, SLU, or
MATH)
Configure
Any instrument except MODCELL
Demand Configure
Any instrument except MODCELL
The block can be configured to wait a specified maximum time for the transaction to complete.
A separate supervisory message block must be configured for each message.
Block outputs are the result, message active and failure flags, the failure count, a message
code indicating success or type of failure, and quality information. A functional block diagram
of a supervisory message block is shown in Figure 8-42. The general and message displays
used to configure the supervisory message block are shown in Figures 8-43 and 8-44.