Mitsubishi AY42-S1 Transistor Output Module – High-Speed PLC Output Module
Mitsubishi Transistor Output Module AY42-S1
Mitsubishi transistor output module AY42-S1:
●Output points: 64
●Voltage: DC12/24V
●Off-state leakage current: 0.1mA
●Output type: Transistor (sink type)
●Response time: 0.3ms
●Common terminals: 32 points per common
●Connector: 40-pin
●Surge absorber included
●High-speed output type
Scan cycle: centralized input sampling and output refresh. Inputs are not read during program execution; new input states are only read in the next scan cycle. A scan cycle consists of input sampling, program execution, and output refresh. The image register content changes with program execution.
Scan cycle length depends on:
●CPU instruction execution speed
●Instruction execution time
●Number of instructions
Due to centralized I/O processing, there is an input/output response delay.
PLC selection: Consider performance-to-price ratio based on control requirements.
System program memory stores system programs (management, monitoring, and compilation). It is read-only, written by the manufacturer, non-modifiable, and retains data when power is off.
The Mitsubishi AY42-S1 is a 64-point transistor output module (sink type) with DC12/24V, 0.1mA off-state leakage current, 0.3ms response time, 32 points per common terminal, a 40-pin connector, surge absorption, and high-speed output capability. It uses a scan-based process with centralized input sampling and output refresh. Inputs are read only at the beginning of each scan cycle; changes during program execution are not read until the next scan. The scan cycle consists of input sampling, program execution, and output refresh. The image register content changes during execution. Scan cycle length depends on CPU speed, instruction execution time, and number of instructions. Centralized I/O processing causes input/output response delays. PLC selection should balance performance and cost. System program memory is read-only, used by the manufacturer, non-volatile, and stores system programs such as management and compiler programs.
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