CR No.
Type
Register
Description
HW
LW
#118 ~#117
R/W Modbus TCP Destination IP
The Destination IP Address of Modbus TCP transaction
#119 R/W Modbus TCP Data Length
Data length of Modbus TCP in CR#120 ~ CR#219
#219 ~ #120 R/W Modbus TCP Data Buffer
Data buffer of Modbus TCP Mode for storing
sending/receiving data
#250 ~ #220
-
Reserved
Reserved
#251
R
Error Code
The ELC-COENETM error code
#255 ~ #252
-
Reserved
Reserved
Symbol defini ion: R: Read, W: Write
Read and write CR register
1. ELC uses the FROM/DFROM instruction to read CR data of fast expansion modules.
2. ELC uses the TO/DTO instruction to write CR data of fast expansion modules.
3. The number of fast expansion modules is from 100 to 107 (m1=100~107).
Explanation
1. CR#2: Communication mode setting: Set to 0 to Disable; Set to 1 to Enable.
bit
Mode
0
1
b0
Modbus TCP Mode
Modbus TCP Mode Disable
Modbus TCP Mode Enable
b1
Data Exchange Mode
Data Exchange Mode Disable
Data Exchange Mode Enable
2. CR#251: Error codes; please refer to the following chart.
CR#251
Error status
b0
Not connected.
b3
CR#13 is set as 1 but Data Exchange func ion has not been enabled.
b7
Connecting to SMTP Server fails.
b8
DHCP did not acquire correct network parameters.
Network Configuration Function
1. CR#87: IP mode setting. Set as 0 to be Static IP address; Set as 1 to obtain IP address by DHCP
(Dynamic IP).
2. CR#88 ~ CR#89: IP Address setting. It’s accessed through Hex Mode. It cannot write when in
DHCP Mode. For example, if the user wants to set the IP as 192.168.0.2, write H’0002 to CR#70
and H’C0A8 to CR#71. (K192 = H’C0, K168 = H’A8, K0 = H’00, K2 = H’02)
3. CR#91 ~ CR#90: Subnet Mask setting. It’s accessed through Hex Mode. It cannot write when in
DHCP Mode. For example, if the user wants set Subnet Mask as 255.255.255.0, write H’FF00 to
CR#90 and H’FFFF to CR#91.
4. CR#93 ~ CR#92: Default Gateway IP Address setting. It’s accessed through Hex Mode. It cannot
write when in DHCP Mode. See CR#88 and CR#89 for the steps of Default Gateway IP Address
setting.
5. CR#94: IP address are configured using CR#87 ~ CR#93 when CR#94 is set to 1. CR#94 = 0
when the IP address configuration is completed.
6. CR#95: Status of IP Address. CR#95 = 0 refers to normal; CR#95 = 1 when the DHCP
transaction is uncompleted; CR#95 = 2 when IP Address setting is in progress.
Sending E-mail Function
1. CR#3 ~ CR#6: E-mail will be sent when set to 1. After the E-Mail sending is complete, the CR
value will be set to 0. Please use differential command to trigger CR#3 ~ CR#6 in order to avoid
continual e-mails.
2. CR#7, CR#8: E-Mail Status. See the table below.
CR Value
E-Mail Status
0
Nothing
1
Processing
2
Success
3 ~ 9
Reserve
10
Cannot connect to SMTP-Server
11
Address
error
12
Error response SMTP-Server transmission error
13
No available TCP connection
