Delta Electronics DeviceNet Slave Communication Module IFD9502, Applications Manual

Page: 16 / 43

DeviceNet Slave Communication Module IFD9502
DVP-PLC Application Manual 14
invalid). Before the communication with DTA series temperature controller, you have to set the content of
H’471A as H’0001 to allow the write-in of communication.
2. Reading and modifying parameters
z IFD9502 allows you to inquire Delta temperature controller by explicit messages. The format of inquiry
is shown in the table below:
Byte position Data written into temperature controller Data read from temperature controller
0 Frag [0]+XID+MAC ID Frag [0]+XID+MAC ID
1 R/R [0]+Service code [0x10] R/R [0]+Service code [0x0E]
2 Class ID [0x98] Class ID [0x98]
3 Instance ID LSB Instance ID LSB
4 Instance ID MSB Instance ID MSB
5 Attribute ID Attribute ID
6 Service data LSB N/A
7 Service data MSB N/A
z
Format of messages responded:
Byte position Data written into temperature controller Data read from temperature controller
0 Frag [0]+XID+MAC ID Frag [0]+XID+MAC ID
1 R/R [1]+Service code [0x10] R/R [1]+Service code [0x0E]
2 N/A Response data LSB
3 N/A Response data MSB
3. I/O data mapping (Default)
z Temperature controller → DeviceNet master
Node address of AC
motor drive
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
H’4700 Present temperature value (PV)
H’4719 RUN/STOP
z DeviceNet master → temperature controller
Node address of AC
motor drive
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
H’4701 Set temperature value (SV)
H’4719 RUN/STOP
z Explanation
„ When the equipment connected to IFD9502 is DTA series temperature controller, the length of
data downloaded from IFD9502 to DTA is preset as 2 words at addresses H’4701 and H’4719.
IFD9502 is able to download maximum 8 words. The length of data uploaded to IFD9502 from
DTA is preset as 2 words at addresses H’4700 and H’4719. IFD9502 is able to be uploaded
maximum 8 words.
„ Length of I/O data to be exchanged and address for mapping can be modified through changing
Class 0x99 as listed below. The modification will be valid after IFD9502 is re-powered. Maximum
16 words are allowed for I/O data exchange.
„ If you are to return the I/O mapping to default setting, change Attribute1 of Instance1 of Class 0x99