ADF Web HD67626-A1, User Manual

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User Manual S7comm / SNMP Agent
Document code: MN67626_ENG Revision 1.000 Page 19 of 27
Figure 4b: “S7 Protocol Access  S7comm Write” window
The means of the fields in the window “S7comm Read” are the following:
In the field “ PLC Address ” the IP address of the PLC that contains the data to be read is defined;
In the field “ PLC Port ” the port used for S7comm communication is defined;
In the field “ PLC Type ” the family of the PLC is defined;
In the field “ Rack ” the Rack’s ID of the PLC is defined;
In the field “ Slot ” the Slot’s ID is defined;
In the field “ Data Type ” the data format of the variable to read is defined;
In the field “ Data Identifier ” the identifier of the variable to read is defined;
In the field “ PLC Area ” the memory area where the data is located inside the PLC is defined;
In the field “ PLC Add ” the starting memory address where the data is located is defined;
In the field “ PLC Bit ” the starting bit of the selected PLC Address is defined;
In the field “ Poll Time ” the frequency of the request is defined (in ms);
By checking the field “ On Change ” the S7comm write request is sent only if SNMP data are changed;
By checking the field “ On CMD ” the S7comm write request is sent when a SNMP writing for the selected variable is received;
In the field “ Position ” the starting byte of the internal memory array from which taking the data to write is defined;
The field “ Start Bit ” is used for the “Bit” data. It is possible to select the bit of the selected Position from which taking the data;
If the field “ Swap ” is checked, the bytes’ order is reversed;
If the field “ Swap W ” is checked, the words’ order is reversed;
In the field “ Mnemonic ” a description of the data inserted in the row is defined.