User guide

eWON 500-2001-4001-4002 User Guide - IO Servers Configuration
eWON 500®2001®4001®4002® Version 4_3_0 - User Guide - 10/5/05 - ©ACT'L sa - Page 90
Notes:
SW type cannot be formatted as float
eWON allows you to optimize the requests in case you need to read a lot of Tags that have been created on the UniTelWay device.
Imagine you have 100 Tags to read, eWon will group the Tags within a predefined limit in order to make the less as reading
operations as possible. The number of Tags that can be read depends of the types of words or bits that have to be read:
SW and MW types: by groups of 50
S and M types: by groups of 200
It is possible to read one bit from a word. The syntax to add is as follows:
#0 to #31
That means, if you want to read the fourth bit from an internal data word 16 bits unsigned that you address MW0,
you have to add "#4" at the end of the address: MW0#4.
The type of words for which this syntax can be applied are:
MWxW, MWxI, MWxD, MWxL, SWxW, SWxI, SWxD and SWxL (please report to the table above).
6.5.3.2 The device address syntax
The Device Address is used in the topic definition or in the Tag definition. If used in the Tag definition,
it will be separated from the value name by a coma (‘,’)
• Network,Station,Gate
or
• Network,Station,Gate,Module,Channel
The second case applies to addresses with 5 levels:
• Network: 0..127
• Station: 0..63
• Gate:
• Module:
• Channel:
Module and channel can be omitted if not required.
If address is not specified, 0,254,0 will be used.
Important: If an address is specified in a Topic definition it will replace any address defined Tag by Tag.