EIP Protocol
PLX30 Series
User Manual
Ethernet and Serial Gateways
Page 54 of 200
ProSoft Technology, Inc.
September 19, 2012
5.2
EIP Configuration
5.2.1 EIP Class 3 Server Connection
The EIP Class 3 Server Connection is used when the gateway is acting as a
server (slave) device responding to message instructions initiated from a Client
(Master) device such as an HMI, DCS, or PLC5.
Configuring EIP Class 3 Server Connections in PCB
The PLX30 Server connection file size is user selectable for 100 or 1000
integers. If a value of 100 is selected valid registers will be from N10:0 to N10:99.
If a value of 1000 is selected valid registers will be from N10:0 to N10:999.
Accessing the Gateway’s Internal Memory
Data Type
Tag Name
Length of Each
Element in CIP
Message
Array Range for 4000
Element Database
BOOL
BOOLData[ ]
1
0 to 63999
Bit Array
BITAData[ ]
4
0 to 1999
SINT
SINTData[ ]
1
0 to 7999
INT
INT_Data[ ]
2
0 to 3999
DINT
DINTData[ ]
4
0 to 1999
REAL
REALData[ ]
4
0 to 1999
The following tables define the relationship of the gateway
’s internal database to
the addresses required in the MSG instructions:
MSG Instruction Type - CIP
Database
Address
CIP Integer
CIP Boolean
CIP Bit Array
CIP Byte
CIP DINT
CIP Real
0 Int_data[0]
BoolData[0]
BitAData[0]
SIntData[0]
DIntData[0]
RealData[0]
999 Int_data[999]
BoolData[15984]
SIntData[1998]
1000 Int_data[1000]
BoolData[16000]
BitAData[500]
SIntData[2000]
DIntData[500]
RealData[500]
1999 Int_data[1999]
BoolData[31984]
SIntData[3998]
2000 Int_data[2000]
BoolData[32000]
BitAData[1000]
SIntData[4000]
DIntData[1000] RealData[1000]
2999 Int_data[2999]
BoolData[47984]
SIntData[5998]
3000 Int_data[3000]
BoolData[48000]
BitAData[1500]
SIntData[6000]
DIntData[1500] RealData[1500]
3999 Int_data[3999]
BoolData[63999]
SIntData[9998]
