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6 Programless Communications
6 - 8
E5
C-T Digital Temperature Controllers Programmable Type Communications Manual (H186)
Communications Setting Level
Display condition: The Protocol Setting parameter must be set to
fins
or
mcp4
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-T, 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-T. The down-
load area is used to write the fixed SP, segment SPs, segment times, alarm values, and other values to
the E5
@
C-T.
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.
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-T Controller is connected to the same communications line, set the starting address
to the same value for all of them. The E5
@
C-T Controller with communications unit number 0 will use the
words that start from the specified starting address, the E5
@
C-T Controller with unit number 1 will use the
words that start from the specified starting address plus 70 words, and the E5
@
C-T Controller with unit
number 2 will use the words that start from the specified starting address plus 140 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-T, 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
· · ·
+24
Monitor Value 23
Downloa
d Area
+25
Request Flag
This flag is used to control programless communications.
+26
Operation
Command Code
The operation command that corresponds to the code is sent.
+27
Set Value 1
The set values at these addresses are written to the E5
@
C-T, such as to the fixed
SP, segment SPs, segment times, and alarm values. The parameters that are
actually used are set in the download settings.
+28
Set Value 2
· · ·
+69 Set Value 43
Summary of Contents for E5CC-T
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