Function Blocks; Introduction; Table 2-1 Function Block Look-Up Table - Honeywell UMC800 Reference Manual

2.1 Introduction

While you can determine the function of many blocks just from their labels and Input/output abbreviations,
the purpose of others may be a complete mystery. This section is designed to familiarize you with function
blocks in general and provide detailed reference data for each block.
In this section
Refer to Table 2-1 for a listing of each function block type and respective reference page.
Function Block Type Identification Label
ABS (Absolute Value)
ADD (Addition 2 Inputs)
4ADD (Addition 4 Inputs)
AI (Analog Input)
ALM (Analog Alarm)
AMB (Auto/Manual Bias)
2AND (AND - 2 Inputs)
4AND (AND - 4 Inputs)
8AND (AND - 8 Inputs)
AO (Analog Output)
ASYS (Alarm System Monitor)
BCD (Binary Coded Decimal Translator)
BOOL (Free Form Logic)
CARB (Carbon Potential)
CMPR (Comparison)
DCMP (Deviation Compare)
DEWP (Dewpoint)
DI (Digital Input)
DIV (Division)
DO (Digital Output)
DSW (Digital Switch)
FGEN (Function Generator)
FSS (Four-Selector Switch)
FSYS (System Monitor-Fast Logic)
HLLM (High-Low Limiter)
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2. Function Blocks

Table 2-1 Function Block Look-up Table

Function Block Reference Guide
Function Blocks
See Subsection
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.17
2.18
2.19
2.20
2.21
2.22
2.23
2.24
2.25
2.26
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