Omron CQM1H-SCB41 Using the Protocol Macro Function, Using the Standard System Protocols

Using Protocol Macros		Section 5-1
	Item	Description
Message con-	*3:	LRC, LRC2, CRC-CCITT, CRC-16, SUM, SUM1, and SUM2 can be calcu-
tents (contin-	Error check codes	lated.
ued)
	Maximum length of	256 bytes.
	send/receive mes-
	sages
	Maximum number of	96 attributes (see note 1)
	data attributes regis-
	tered in one message
	Maximum number of	30 attributes (see note 2)
	write data attributes
	registered in one mes-
	sage
Trace function		A total of up to 1,700 bytes (characters) of time-series data can be traced in
		send and receive messages.
		Changes to the step No. and control signals such as RTS and CTS can also
		be traced.

Note 1. The CX-Protocol can be used to register up to 96 attributes per message.

2.A macro syntax error will occur when the protocol macro is executed if more than 31 write attributes are registered in one message.

5-1-3 Using the Protocol Macro Function

Using the Standard System Protocols

The following three methods are available for using the protocol macro function.

When connecting OMRON devices, data is sent and received between the CQM1H-series CPU Unit and these devices by specifying the sequence number of the standard system protocol provided in the Serial Communications Board and CX-Protocol, and executing the sequence using the PROTOCOL MACRO instruction (PMCR(––)). The CX-Protocol is not required to use the standard system protocols.

CPU Unit	Serial Communications Board
		Standard system protocol
		Sequence No. 001
Sequence		Messages
number	Sequence No.	Step 0
	specification	Step 1
		RS-232C or
		RS-422A/485
I/O memory		Shared memory

I/O refreshing

*Send/receive messages are stored in the area one or more words after the send data address or the receive data address specified in the PMCR(––) instruction.

OMRON devices

Note The devices for which standard system protocols are provided are listed below. For details, refer to 5-7 Using Protocol Macros.

Digital Controllers (E5jK, ES100j), Temperature Controllers (E5ZE, E5jJ), Intelligent Signal Processors (K3Tj), Bar Code Readers (V500/V520), Laser Micrometers (3Z4L), Visual Inspection Units (F200/F300/F350), ID Controllers (V600/V620), Hayes Modem AT Com- mand, and devices supporting the CompoWay/F protocol.

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