Delta Electronics DVPEN01-SL manual Numbering of Left-Side Extension Modules

Ethernet Communication Module DVPEN01-SL

CR#116: Modbus TCP Status

Explanations:

Displaying the current communication status of Modbus TCP mode. When the CR value is set as”0” Æ the data have not yet been received; when the CR value is set as “1” Æ the data exchange is in progress; when the CR value is set as “2” Æ the data exchange is successful; when the CR value is set as “3” Æ the data exchange fails.

CR value	Data exchange status
0	The data have not been received.
1	The data exchange is in progress.
2	The data exchange is successful.
3	The data exchange fails.

CR#117, 118: Modbus TCP Destination IP

Explanations:

Setting up the destination IP address in Modbus TCP mode. See explanations on CR#70 and #71 for how to set.

CR#119: Modbus TCP Data Length

Explanations:

Setting up the length of communication data in Modbus TCP mode. Length for 8-bit mode: K1

~K100; length for 16-bit mode: K1 ~ K200.

CR#120 ~ 219: Modbus TCP Data Buffer

Explanations:

Buffer for transmitted/received data in Modbus TCP mode.

CR#251: Error Code

Explanations:

Table of error code:

Bit No.	Error
b0	The network is not yet connected.
b1	Incorrect IP setting
b2	CR#13 is set as “transmitting data”, but the data exchange
	is forbidden.
b3	CR#13 is set as “transmitting data”, but the data exchange
	mode has not yet been enabled.
b4	NTP-Server connection fails.
b7	SMTP-Server connection fails.
b8	DHCP has not obtained the correct network parameter.

4.3Numbering of Left-Side Extension Modules

After DVPEN01-SL is installed properly, you need to compile the PLC program to control the extension modules. PLC offers FROM instrcution (for reading) and TO instrcution (for writing) to control the control

12 DVP-PLC Application Manual