Delta Electronics DVPDNET-SL - Manual (Page 2)

Input and Output Image Tables
The mapping of the scanner input and output image (the 1
st scanner):
Output image Input image
D register Image mapping Length D register Image mapping Length
D6250 – D6281
Explicit message
program request
32 words D6000 – D6031
Explicit message
program
response
32 words
D6282 - D6476 DeviceNet output
data 195 words D6032 – D6226 DeviceNet input
data 195 words
D6477 – D6497
Reserved for other
function (do not use
these devices in
user program)
21 words D6227 – D6247
Reserved for
other function (do
not use these
devices in user
program)
21 words
Using Explicit Message in Application Program
DNET scanner can use PLC application program to send the explicit message request and receive explicit
message response.
28SV DNET
VFD-B DNA02
Exp Response (DNET->PLC)
Exp Request(PLC->DNET)
A
D
B
Master's explicit request
Slave's explicit response
C
DVPDNET DVP28SV
RUN
STOP
PORT2 PORT1
Step A: PLC transfers the explicit message data to DNET scanner.
Step B: DNET scanner sends the explicit request to target devices.
Step C: The target devices process the request and send the response to DNET scanner.
Step D: PLC receives the explicit response data.
Explicit Message Structure
The explicit message is controlled by explicit message program request area and explicit message program
response area. The two areas are mapped to D registers in PLC.
Output image Input image
D register Image mapping Length D register Image mapping Length
D6250 – D6281 Explicit message
program request 32 words D6000 – D6031 Explicit message
program response 32 words
The user can move the data of explicit request message to D6250 – D6281 and DNET scanner will fill the
response data into D6000 – D6031. The explicit message request format is shown in the table below.
D register Output explicit request
D6250 ReqID Command
D6251 Port Size Message Header
D6252 Service code MAC ID
D6253 Class id
D6254 Instance id Message Data
D6256 – D6281 Service data (optional)
„ ReqID: When sending every explicit message, the user has to assign a Request ID for this explicit message.
DNET scanner identifies the response message by this ID. Therefore, the user has to change the ID value
when completing an explicit message communication for the next transmission.
„ Command code: Fixed to 01 for every message transmission.
„ Port: Reserved as 0 for every message transmission.
„ Size: The size of message data (starting from D6253); Unit: byte.
„ Service code: The service code of this explicit message.
„ MAC ID: The node address of target devices.
The format of explicit message response:
Words Input explicit response
D6000 ReqID Status
D6001 Port Size Message Header
D6002 Service code MAC ID
Message Data D6003-D6031 Service response data
„ Status code:
Status code Description
0 No request transmission
1 Explicit message communication is successful
2 Explicit message communication is in progress
3 Error: Cannot get response from target device
4 Error: Command code is invalid
5 Error: The request data size is invalid
6 Error: The response data size is invalid
7 Error: Cannot connect to target device
8-255 Reserved
Troubleshooting
NS LED
NS LED status Indication How to correct
OFF
No power or duplicate ID check has
not completed
1. Make sure the scanner is powered.
2. Make sure at least 1 node or more are
communicating in the network.
Flashing GREEN No communication No correction is needed, or refer to digit-indicator.
GREEN Normal operation No correction is needed.
Flashing RED Error in communication Refer to digit-indicator.
RED
Network error; cannot check
duplicate ID; Bus-off (please refer to
digit-indicator)
1. Make sure all the devices have their unique
address.
2. Check the network for correcting media
installation and baud rate.
MS LED
MS LED status Indication How to correct
OFF
No power Make sure the scanner is powered.
Flashing GREEN The master is not configured.
Configure the scan list and re-download it to the
scanner.
GREEN Normal operation No correction is needed.
Flashing RED
Some slaves encounter
communication error.
Refer to digit-indicator and check the scanner
setup.
RED
Internal fault in the scanner module
(please refer to digit-indicator)
Check if the configuration is valid. If the internal
error still exists, replace the scanner with a new
one.
NS & MS LED
NS LED MS LED Indication How to correct
OFF
OFF No power Make sure the scanner is powered.
OFF GREEN Duplicate ID check has not
completed
Make sure at least 1 node or more are
communicating in the network and the baud rate is
the same as the setting in DVPDENT.
RED
Flashing
RED
No 24V DC power from
DeviceNet network
Check if the network cable is correctly connected to
DVPDNET.
Check the 24V DC network power.
RED RED Hardware error and no
network power
Go to your manufacturer or distributor for
problem-solving.
RED GREEN MAC ID detection failure or
Bus-off
Change the MAC ID setting and re-power
DVPDNET.
Digit-Indicator LED
Code Indication How to correct
0-63 Node address of scanner, normal operation None
F0 Duplicate MAC ID check failure Change the address and re-power DNET scanner.
F1 No scan list is active in the module
No slave device in the scan list. Configure the
scanner and download it to the scanner.
F2 Low voltage is detected
Check if the power of the scanner and PLC MPU is
normal.
F3 Entering Test Mode
Switch IN1 from ON to OFF and re-power the
scanner.
F4 Bus-off detected Re-power the scanner.
F5 No network power
Make sure the cable is correctly connected and
check if the network power is normal.
F6 Internal error; Flash or Ram check error
If the error still exists after re-power, replace the
scanner with a new one.
F7 Internal error; GPIO check error
If the error still exists after re-power, replace the
scanner with a new one.
F8 Error in factory manufacturing
If the error still exists after re-power, replace the
scanner with a new one.
F9
Internal error; EEPROM access failure
If the error still exists after re-power, replace the
scanner with a new one.
E0
Device key parameter does not match scan
list table.
Make sure that the device parameter in scan list
matches the desired key parameter, including vendor
ID, product code, device type and version.
E1 Data size returned does not match scan list. Re-configure scan list using correct data size.
E2 Salve device in scan list does not exist.
The desired slave device does not exist in the
network. Add device to the network.
E3 Module fails to transmit a message
Make sure that the connection is valid and check if
the baud rate is correct.
E4
Error detected in sequence of fragmented I/O
messages from device.
Fragmented I/O data is invalid from slave device.
E5
Slave device returns error response when the
scanner attempts to communicate with it.
None
E6 Data size returned is bigger than expected.
Check slave device configuration and scan list
configuration.
E7 Device is checking MAC ID. None
The content of this instruction sheet may be revised without prior notice. Please consult our distributors or
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