Parker Hannifin GEM6K manual Varshi, Shared Input Variable for Peer-to-Peer Data Exchange

*Connection Open	YES	NO	NO	NO	NO	NO
*Server Connection Error	NO	NO	NO	NO	NO	NO
*In Polling Mode	YES	NO	NO	NO	NO	NO
*Polling Timeout Error	NO	NO	NO	NO	NO	NO
*	NO	NO	NO	NO	NO	NO
*Reserved
*Reserved	NO	NO	NO	NO	NO	NO
*Reserved	NO	NO	NO	NO	NO	NO
*Reserved	NO	NO	NO	NO	NO	NO

VARSHI	Shared Input Variable for Peer-to-Peer Data Exchange
Type:	Variable; Network	Product	Rev
Syntax:	<!><n>VARSHI<i>	6K	5.3
	(see diagram below for assignment syntax)
Units:	n = unit number in the peer-to-peer network;
	i = VARSHO number from unit “n”

Range: n = 1-8;

i= 1-8

Default: n/a

Response: 1VARSHI1: *1VARSHI1=0.0

See Also: IN, VAR, VARB, VARI, VARSHO

The VARSHI command helps you use shared data over a peer-to-peer Ethernet connection with other 6K or Gem6K products. VARSHI can be used to assign the integer or binary VARSHO data to a VAR (numeric), VARI (integer), or VARB (binary) variable, or to a virtual input brick (IN). You can also use VARSHI in a conditional statement, such as IF, WAIT, WHILE, or UNTIL.

The diagram below shows the syntax requirements for assigning VARSHI data to a variable:

<assignment> = <n> VARSHI <i>

Assignment options:

<variable>n

Variable number

VAR (numeric variable)

VARI (integer variable)

VARB (binary variable)

n IN (virtual input assignment) I/O brick number.

•Range: 1-8

•Must be an unused I/O brick

Number of the VARSHO variable from unit <n>

Number of the source unit (use this unit’s VARSHO data)

The Implementation Process, beginning on page 8, identifies how to use the VARSHI command in context with the process of setting up the peer-to-peer Ethernet data sharing.

Example: This example uses peer-to-peer communication with three 6K8 products.

;****	This code is executed on Peer unit #1:		**************************
NTID1		; This unit is the "primary unit" (unit #1)
NTRATE100		; Set the sharing	rate to 100ms and enable this unit
VARSHO1=1PE		; Store axis #1 encoder position in shared output variable #1
;*************************************************************************
;****	This code is executed on unit #3: **************************
NTID3		; Set unit ID to 3	rate to 100ms and enable this unit
NTRATE100		; Set the sharing
VARSHO2=4PCEA		; Store the captured encoder position of axis #4 in shared
VARSHO1=3AS		; output variable	#2
		; Store axis #3's	axis status (binary data) in shared

;output variable #1

;*************************************************************************

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