103
Programless Communications
Section 5-6
■
Programless Upload/Download Settings
• Use the EST2-2C-MV3 CX-Thermo Support Software to make the set-
tings.
• The parameters for the following variable types can be set. Up to 300 set-
tings can be made.
• Parameters can be set to Not used to reserve words for future use.
Note
The words set to Not used cannot be used for any other purpose
except the programless function.
• Only channels 1 and 2 can be set for TC2 Units.
!
Caution
• There are 304 programless upload and 304 programless download set-
tings, which are linked to data to the PLC memory, from the start address
to the end code (00FF). Always set an end code at the end of linked data,
because all 304 pieces of data will be linked if there is no end code.
Each start area contains a reserved area used to control programless
communications from the PLC. Information on how to use programless
uploading and downloading is provided under 5-6-4 Description of Opera-
tion.
• The communications speed will drop if there is a lot of linked data. Adjust
the number of linked data items that are set to suit the system.
• If non-existent settings are set, programless uploading and downloading
will not operate correctly. The communications speed may also be
affected, so always use valid settings.
The bit corresponding to the unit number will turn ON if an error occurred in
communications during programless downloading or programless uploading.
The status ON/OFF conditions are listed in the following table.
■
Examples:
Bit 15 Turns ON.
This indicates that a communications error has occurred for Unit No. 15.
Communications
Protocols and
Memory Allocation
For the EJ1G to communicate with the PLC, the Programless Communica-
tions Protocol must be set and the area in PLC memory that will be allocated
to parameters for the Programless Upload/Download Settings must be set.
• The communications protocol is set under Programless Communications
Protocol.
• Select the type of memory area under Programless Communications
Upload/Download Data Area and set the start address for the memory
allocation in the Programless Communications Upload/Download Start
Address.
Programless upload
settings
Variable types: C4/84, C5/85, D0/90, D1/91, D2/92, D3/
93, D4/94, D5/95, and D6/96
Programless download
settings
Variable types: D4/94, D5/95, and D6/96
ON
At least one error occurred.
OFF
Normal communications occurred 22 times in a row.
Summary of Contents for EJ1G
Page 3: ...iv ...
Page 17: ...xviii ...
Page 21: ...xxii ...
Page 53: ...32 Unit Configuration Examples Section 2 4 ...
Page 69: ...48 Changing SPs During Operation Section 3 3 ...
Page 81: ...60 Other Functions Section 4 5 ...
Page 145: ...124 Other HFU Functions Section 5 7 ...
Page 167: ...146 Detailed Description of Services Section 6 4 ...
Page 229: ...208 Parameters That Can Be Allocated for Programless Communications Appendix ...
Page 237: ......