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RS-232C Communication
Cha
ter 11
11.1 Overview
Communication Mode
This is a mode to communicate with the external device using COM1 port on the PV310 via RS-232C. Three
communication modes descried below are available. Communication contents differ depending on the mode. Select
a proper mode for your communication environment. Even if you choose any mode from the following modes, most
of the provided commands will be valid. The following RS-232C communications that are available by selecting
“Output Settings” in the ENVIRONMENT menu > “Data Output Settings” > “General Output” tab.
Communication Mode Description
Serial (Per Start) This is a 3-wire nonprocedural mode. In this mode, after inspection, the next
signals are not accepted until communication is complete.
Serial (Async.) This is a 3-wire nonprocedural mode. In this mode, after execution of inspection,
READY signal is recovered and communication is established while the PV310
does not perform image processing operations (while READY signal is ON and
the PV310 is capturing images). READY signal OFF time (Inspection Execution
Time) is shorter than that for Serial (Per Start). (Refer to page 244 for Timing
Chart.)
Computer Link The PV310 writes inspection results to the specific registers of PLC. Since the
PLC automatically sends a response, a program for receiving data at the PLC
side is not necessary. You can also switch the product type by referring the
number stored in the specified register. It supports the particular PLC.
See page 283
Communication Specifications
Item Specification
Communication Method Full duplex
Synchronous Method Asynchronous
Communication Speed 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200-bit/s (Initial value: 9600)
Transmission Code ASCII
Bit Length 7-bit, 8-bit (Initial value: 8-bit)
Stop Bit 1-bit, 2-bit (Initial value: 1-bit)
Parity None/Odd/Even (Initial value: Odd)
Flow Control None/Software (Initial value: None)
Transmission
Format
Delimiter CR
COM2 port is not available.
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