Hardware manual

Impact Reference Guide AB PCCC Server
2-41 Datalogic Automation Inc.
No values for the PCCC Server properties are saved in the Vision Program (*.vp) files. If you require initial
values, they must be set using explicit Data Set operations in the program when it loads. The VPM PCCC
server properties (the number in brackets) are described here.
NOTE: This System Object is not available while the device is online.
AB PCCC Server Properties Tab
How VPM Works With AB PCCC
The AB PCCC server runs continuously on the Impact device. It does not initiate any communications, but
waits for other PCCC devices on the network. To configure a VPM task to run when a PLC device commu-
nicates with the Impact device, select the AB PCCC Event Trigger Event Type. (See “Trigger Event Types”
on page 3-35).
The server supports Typed Read and Typed Write commands. These are standard PCCC commands using
command code 0F and functions 0x68 and 0x67 respectively. The PCCC command is placed inside an Eth-
erNet/IP command that targets the EiP object 0x67 and service 0x4B on the Impact device.
There are four files of data that can be read or written. These are statically-allocated arrays of data analogous
to Modbus registers.
The Integer file is limited to sixteen bits which is the standard for PLC-5 devices and the protocol.
Reals conform to the IEEE 754 standard for representing a real number in four bytes.
The Character file has signed characters. These may be used for characters of other signed one-byte data as
well as Boolean values.
The String file entries each contain a variable-length string. The data is passed as the SINT format. Only one
string at a time may be read or written as it is already passing an array of data. The other three data types
may pass one to n data elements at a time.
Input Name What it is
N7-Integer [0]
through N7-Integer
[63]
64 indexed integer values
F8-Float [0] through
F8-Float [63]
64 indexed float values
A9-ASCII [0]
through A9-ASCII
[63]
64 indexed 1-byte characters
ST10-String [0]
through ST10-
String [31]
32 indexed string values
File Type File Name PCCC Data Type Depth Port Names
Integer 16-bit N7 INT 64 INT [*]
Float 4-byte F8 REAL 64 REAL [*]
Character 1-byte A9 SINT 64 SINT [*]
String n-chars ST10 SINT 32 String SINT [*]