System information

General Reference Guide IO Servers Configuration
RG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 103
The Item Name can contain the PLC address where the value is polled, or not. If the address is also specified at the topic level, the address
specified at Tag level will be ignored.
5.6.3.1 Value Name
5.6.3.1.1 General Description
The general format of value names for data from SLC-500 controllers matches the naming convention used by the programming software. The
format is shown below (The parts of the name shown between square brackets are optional).
General Value Name Format: X: [file] element [.field] [/bit]
X: Identifies the file type. The below table summarizes the valid file types, default file number for each type and the fields allowed.
• File: File number must be 0-255 decimal
• Element: Element number within the file
• Field: Valid only for Counter, Timer and Control files
• /bit: Valid for all types except Floating
5.6.3.1.2 Output File Items
Output File Item Format: O[n]:e.s[/b]
• "n" represents the file number and is optional. Value is always zero
• "e" indicates the element number in the file (0..30)
• "s" indicates the sub-element number (0..255)
• "b" specifies the bit (0..15) decimal
5.6.3.1.3 Input File Items
Input File Item Format: I[n]:e.s[/b]
• "n" represents the file number and is optional. Value is always one
• "e: indicates the element number in the file (0..30)
• "s" indicates the sub-element number (0..255)
• "b" specifies the bit (0..15) decimal
Topic Name
A
B
C
Item Name
ValueName, DeviceType-DeviceAddress
Device Type and Address are defined Tag by Tag
Only device Type SLC500 is supported
Device Address is a number between 0..254
ValueName Topic PLC Address is used
X File Type Default file Number Fields
O Output 0
I Input 1
S Status 2
B Binary 3
T Timer 4 .PRE, .ACC, .EN, .TT, .DN
C Counter 5 .PRE, .ACC, .CU, .CD, .DN, .OV, .UN, .UA
R Control 6 .LEN, .POS, .EN, .DN, .ER, .UL, .IN, .FD
N Integer 7
F Floating 8
A ASCII none
Table 76: value names for DF1 addresses
Table 75: DF1 IO server configuration