6 - 9
6 Programless Communications
E5@C Digital Temperature Controllers Communications Manual (H175)
6-2 E5
C Set
u
p
6
6-
2-5 Are
as an
d First Address of Linked D
ata
Communications Setting Level
Display condition: The Protocol Setting parameter must be set to
fins
,
mcp4
, or
fxp4
, or the Protocol
Setting parameter must be set to
cmp
and the Communications Unit No. parameter must be set to 0
(master).
Two areas are used in PLC memory by the E5
@
C, an upload area and a download area. The upload
area is used to monitor the process value, status, and other information from the E5
@
C. The download
area is used to write the set point, alarm values, and other values to the E5
@
C.
The Response Flag, Communications Status, Request Flag, and Operation Command Code all have
special functions that cannot be changed. Refer to the following sections for application methods.
Request Flag:
6-3-1 Controlling Programless Communications with the Request Flag
Response Flag:
Operation Command Code:
Communications Status:
6-3-5 Confirming Operation of Programless Communications
The portion of PLC memory to use is set with the Area, First Address Upper Word, and First Address
Lower Word parameters.
Note: If more than one E5
@
C Controller is connected to the same communications line, set the starting address to
the same value for all of them. The E5
@
C Controller with communications unit number 0 will use the words
that start from the specified starting address, the E5
@
C Controller with unit number 1 will use the words that
start from the specified starting address plus 30 words, and the E5
@
C Controller with unit number 2 will use
the words that start from the specified starting address plus 60 words
Parameter name
Displayed characters
Setting range
Default
Highest Communications Unit No.
maxu
0 to 99
0
6-2-5
Areas and First Address of Linked Data
Address
Data in PLC
memory
Upload
Area
XXXX Response Flag
This flag indicates the completion of processing for the Request Flag.
+1 Communications
Status
The status that is given at this address is used in the PLC to check the operation
of programless communications.
+2 Monitor Value 1
Information from the E5
@
C, such as the PV or status, is set at these addresses.
The parameters that are actually used are set in the upload settings.
+3 Monitor Value 2
· · ·
+14 Monitor Value 13
Download
Area
+15 Request Flag
This flag is used to control programless communications.
+16 Operation
Command Code
The operation command that corresponds to the code is sent.
+17 Set Value 1
The set values at these addresses are written to the E5
@
C, such as to the set
point or alarm values. The parameters that are actually used are set in the
download settings.
+18 Set Value 2
· · ·
+29 Set Value 13
Address
Data in PLC memory
E5
@
C
Each E5
@
C
Controller is
allocated 30
words.
XXXX Response Flag
←
Communications Unit Number 0
+1 Communications Status
+2 Monitor Value 1
· · ·
+15 Request Flag
→
+16 Operation Command Code
+17 Set Value 1
· · ·
+30 Response Flag
←
No.1
+31 Communications Status
· · · · · ·
Summary of Contents for E5AC
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Page 16: ...Revision History 14 E5 C Digital Temperature Controllers Communications Manual H175...
Page 22: ...20 E5 C Digital Temperature Controllers Communications Manual H175...
Page 214: ...7 Component Communications 7 8 E5 C Digital Temperature Controllers Communications Manual H175...
Page 219: ...I 1 E5 C Digital Temperature Controllers Communications Manual H175 I Index...
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