Mitsubishi AL2 Series User Manual

α2 Simple Application Controllers
Function Blocks 6
6 - 36
6.16 Zone Compare Block
This function checks whether a value is within a specified range. There are three values - the
Low Limit (L), Input Value (I), and High Limit (H). These values can be Set Directly, be
Analogue Inputs, or by Function Block values. The Output can be given a Set or Reset priority.
Set Priority - The Output turns ON when the Input Value is equal to or between the High and
Low Limits.
Reset Priority - The Output turns ON when the Input Value is outside the High and Low Limits.
Table 6.16: Zone Compare Function Block
Function Set Item Description
I Input pin for zone compare operation
FB
The following conditions apply to the function block:
1) Low (compare value L)
a) Range: -32768 to +32767 with initial value set at 0
b) Analogue data A01-A08
c) Other function block data
2) Input (input value I)
a) Range: -32768 to +32767 with initial value set at 0
b) Analogue data A01-A08
c) Other function block data
3) High (compare value H)
a) Range: -32768 to +32767 with initial value set at 0
b) Analogue data A01-A08
c) Other function block data
Output
Output status:
1) ON in the zone
The value from the input pin is compared with the preset high and low
values and sets the output ON when the zonal compare condition is
satisfied.
Otherwise the output is OFF.
2) OFF in the zone
The value from the input pin is compared with the preset high and low
values and sets the output OFF when the zonal compare condition is
satisfied. Otherwise the output is ON.
000
CZ
OI P

Mitsubishi AL2 Series Specifications

General

Model	AL2 Series
Digital Inputs	Yes
Digital Outputs	Yes
Type	PLC
Manufacturer	Mitsubishi
Input Voltage	100 to 240 VAC or 24 VDC (depending on model)
Output Voltage	24V DC
Number of Inputs	8 to 64 (depending on model)
Number of Outputs	6 to 64 (depending on model)
Programming Language	Ladder Diagram
Communication Ports	RS-232, RS-485, Ethernet (depending on model)
Operating Temperature	0 to +55°C
Storage Temperature	-20°C to 70°C
Humidity	10% to 90% (non-condensing)
Weight	Varies depending on the model