Ethernet Communication Module DVPEN01-SL
DVP-PLC Operation Manual
14
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 codes:
Bit No.
Error
b0
The network is not yet connected.
b1
Incorrect IP address 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.
RTU Mapping
CR#15:
Enabling glag for the RTU mapping
Explanations:
1: Enable
0: Disable
Default=0
Firmware V2.0 and later versions support the RTU mapping.
CR#16:
Connection status of the RTU mapping slave
Explanations
:
b3~b0 display the connection status of RTU slave. The connection may encounter some problems when any of the bits
becomes 0. Firmware V2.0 and later versions support RTU mapping.
b0: Status of RTU slave 1
b1: Status of RTU slave 2
b2: Status of RTU slave 3
b3: Status of RTU slave 4
4.3 Numbering of Left-Side Modules
After DVPEN01-SL is installed properly, you need to compile the PLC program to control the special I/O module. PLC
offers FROM instruction (for reading) and TO instruction (for writing) to control the control registers (CR) in the special
I/O module.
Numbering of the modules: Every special I/O module connected to PLC MPU has a No. to allow you to know which
module is which when compiling the PLC program. The first special I/O module attached at the left hand side of the
PLC MPU is numbered as K100, the second as K101, the third K102, and so on.
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