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2. CR#1, CR#10, CR#11, CR#16, CR#17, CR#22, CR#23, CR#28 and CR#29 are reserved.
3. CR#2 ~ CR#5: The times to average the temperatures measured at CH1 ~ CH4. Range: K1 ~ K20. Default =
K10. Please note that the average times set in CR#2 ~ CR#5 need to be written in only once.
4. CR#6 ~ CR#9: The average Celsius temperature measured at CH1 ~ CH4 obtained from the average time
settings in CR#2 ~ CR#5. For example, if the average time is set as 10, the content in CR#6 ~ CR#9 will be the
average of the most recent 10 temperature signals in Celsius at CH1 ~ CH4.
5. CR#12 ~ CR#15: The average Fahrenheit temperature measured at CH1 ~ CH4 obtained from the average time
settings in CR#2 ~ CR#5. For example, if the average time is set as 10, the content in CR#12 ~ CR#15 will be
the average of the most recent 10 temperature signals in Fahrenheit at CH1 ~ CH4.
6. CR #18 ~ CR #21: Displaying the present temperature in Celsius at CH1 ~ CH4
7. CR #24 ~ CR #27: Displaying the present temperature in Fahrenheit at CH1 ~ CH4
8. CR #30: Error status (see the table below):
Error status
Content
b15 ~ b8
b7
b6
Abnormal power supply
K1(H'1)
0
0
Scale exceeds the range
or wiring to empty external
K2(H'2)
0
0
contact
Incorrect mode setting
K4(H'4)
0
0
OFFSET/GAIN error
K8(H'8)
0
0
reserved
Hardware malfunction
K16(H'10)
0
0
Abnormal digital range
K32(H'20)
0
0
Incorrect average times
K64(H'40)
0
1
setting
Instruction error
K128(H'80)
1
0
Note: Each error status is determined by the corresponding bit (b0 ~ b7) and there may be more than 2 errors occurring at the same time.
0 = normal; 1 = error
9. CR#31: The setting of RS-485 communication address. Range: 01 ~ 255. Default = K1.
10. CR#32: The setting of RS-485 communication speed. b0: 4,800bps; b1: 9,600bps (default); b2: 19,200bps; b3:
38,400bps; b4: 57,600bps; b5: 115,200bps; b6 ~ b13: reserved; b14: high/low bit exchange of CRC checksum
(only valid in RTU mode); b15: switching between ASCII mode and RTU mode.
11. CR#33: b0 ~ b11: For returning the CR settings to default settings.
b12 ~ b15: ERR LED definition. Default: b12 ~ b15 = 1111.
12. CR#34: Firmware version of the model.
13. CR#35 ~ CR#48: Parameters for system use.
14. CR#0 ~ CR#34: The corresponding parameter address H'4064 ~ H'4086 are for users to read/write data by
RS-485 communication. When using RS-485, the user has to separate the module with MPU first.
a. Communication baud rate: 4,800/9,600/19,200/38,400/57,600/115,200 bps.
b. Modbus ASCII/RTU communication protocol: ASCII data format (7-bit, Even bit, 1 stop bit (7, E, 1)); RTU
data format (8-bit, Even bit,1 stop bit (8, E, 1)).
c. Function: H'03 (read register data); H'06 (write 1 word datum into register); H'10 (write many word data into
register).
d. Latched CR should be written by RS-485 communication to stay latched. CR will not be latched if written by
MPU through TO/DTO instruction.
Temperature/Digital Curve
Celsius temperature measurement mode
Digital output
+6000
+3000
Measured temperature input
-200 C
+600
C
-2000
Fahrenheit temperature measurement mode
Trial Operation & Troubleshooting
LED Display
1. When the module is powered for the first time, POWER LED will be on and ERROR LED will be on for
b5
b4
b3
b2
b1
b0
0.5 second. After this, A/D LED will start to flash.
0
0
0
0
0
1
2. When the power supply is normal, POWER LED will be on and ERROR LED should be off. When the
0
0
0
0
1
0
power supply is less than 19.5V, ERROR LED will keep being on until the power supply goes higher
0
0
0
1
0
0
than 19.5V.
0
0
1
0
0
0
3. When series connected with PLC MPU, the RUN LED on the MPU will be on and A/D LED will flash.
0
1
0
0
0
0
1
0
0
0
0
0
4. When controlled by RS485, RS-485 LED on the module will flash after receiving the RS-485 instruction.
0
0
0
0
0
0
5. When the input or output value exceeds the upper bound or falls below the lower bound after conversion,
ERROR LED will flash.
0
0
0
0
0
0
Program Example
Read the model name from K0 and see if it is DVP04PT-H2: H'6402
Set the average times in CH1 ~ CH4 as D10 ~ D13.
If D0 = H'6402, read the average temperature (°C) measured in CH1 ~ CH4 from CR#6 ~ CR#9 and store the 4
data in D20 ~ D23.
Read the average temperature (°F) measured in CH1 ~ CH4 from CR#12 ~ CR#15 and store the 4 data in D24~
D27.
Read the average temperature (°C) measured in CH1 ~ CH4 from CR#18 ~ CR#21and store the 4 data in D30~
D33.
Read the average temperature (°F) measured in CH1 ~ CH4 from CR#24 ~ CR#27 and store the 4 data in D34~
D37.
Relevant Instructions
API
F R O M
78
D
Instruction
Explanation
Program
Example
Digital output
+11,120
+5,560
Measured temperature input
-328 F
+1,112
F
-3,280
M1000
FROM
K0
K0
D0
K1
M1002
TO
K0
K2
D10
K4
= H 6402 D0
'
FROM
K0
K6
D20
K4
FROM
K0
K12
D24
K4
FROM
K0
K18
D30
K4
FROM
K0
K24
D34
K4
END
Read CR data in special modules
P
: No. of special module (m1 = 0 ~ 7)
: CR# in special module to be read
: Device for storing read data
: Number of data to be read at a time
Read CR#24 of special module No. 0 into D0 and CR#25 into D1. Only 2 groups of data are
read at a time (n = 2).
X0
FROM
K0
K24
D0
K2
API
T O
Write CR data into special module
79
D
P
: No. of special module (m1 = 0 ~ 7)
: CR# in special module to be written
Instruction
Explanation
: Data to be written into CR
: Number of data to be written at a time
Use 32-bit instruction DTO to write the content in D11 and D10 into CR#7 and CR#6 of special
module No. 0. Only 1 group of data is written in at a time (n = 1).
Program
Example
X0
DTO
K0
K6
D10
K1
Operand rules
1.
: The No. of special modules connected to PLC MPU. No. 0 is the module closest to te
MPU. Maximum 8 modules are allowed to connected to a PLC MPU and they will not occupy
any I/O points.
2.
: CR#. CR (control register) is the 49 16-bit memories built in the special module,
numbered in decimal as #0 ~ #48. All operation status and settings of the special module are
contained in the CR.
3.
FROM/TO instruction is for reading/writing 1 CR at a time. DFROM/DTO instruction is for
reading/writing 2 CRs at a time.
Hi gh er 16 -b it
L owe r 1 6- bi t
CR #10
CR #9
4.
Number of groups "n" to be transmitted: n = 2 in 16-bit instructions and n = 1 in 32-bit
instructions mean the same.
Designated device
Designated CR
Designated device Designated CR
D0
CR #5
Remarks
CR #6
D1
CR #7
D2
D3
CR #8
D4
CR #9
D5
CR #10
16-bit instruction when n=6
M1083 for switching instruction modes in EH2 series models
1.
When M1083 = Off, during the execution of FROM/TO instruction, all external or internal
interruption subroutines will be forbidden. The interruptions are allowed only after FROM/TO
instruction finishes its execution. FROM/TO instruction can also be used in an interruption
subroutine.
2.
When M1083 = On and an interruption signal occurs during the execution of FROM/TO
instruction, the interruption will be processed first (with a 100us delay) and the execution of
FROM/TO will be stopped. After the interruption subroutine finishes its execution, the
program will jump to the next instructio of FROM/TO. FROM/TO cannot be used in an
interruption subroutine.
The content of this instruction sheet may be revised without prior notice. Please consult our distributors or
download the most updated version at http://www.delta.com.tw/industrialautomation
De sig na ted CR nu mbe r
D0
CR #5
CR #6
D1
CR #7
D2
D3
CR #8
D4
CR #9
D5
CR #10
32-bit instruction when n=3
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