Yokogawa EJX930A - Manual (Page 143)

A7-6
IM 01C25T02-01E
A7.10 Comments on System/Network Management VFD Parameters
Relating to Software Download
IMPORTANT
Do not turn off the power to a field device immediately after changing parameter settings. Data writing
actions to the EEPROM are dual redandant to ensure reliability. If the power is turned off within 60 seconds
after setup, the parameters may revert to the previous settings.
(1) DWNLD_PROPERTY
Sub
Index
Element
Size
(Bytes)
Description
1 Download Class 1 Indicates the download class.
1: Class 1
2 Write Rsp Returned For ACTIVATE 1 Indicates whether a write response is returned to the ACTIVATE
command.
1: Write Response Returned
3 Write Rsp Returned For PREPARE 1 Indicates whether a write response is returned to the PREPARE
command.
1: Write Response Returned
4 Reserved 1 (Reserved)
5 ReadyForDwnld Delay Secs 2 Indicates the maximum delay after receipt of the PREPARE_
FOR_DWNLD command to proceed to transition from DWNLD_
NOT_READY to DWNLD_READY.
6 Activation Delay Secs 2 Indicates the maximum delay after receipt of the ACTIVATE
command to proceed to transition from DWNLD_OK to
DWNLD_NOT_READY.
(2) DOMAIN_DESCRIPTOR
Sub
Index
Element
Size
(Bytes)
Description
1 Command 1 Reads/writes software download commands.
1: PREPARE_FOR_DWNLD (instruction of download preparation)
2: ACTIVATE (activation instruction)
3: CANCEL_DWNLD (instruction of download cancellation)
2 State 1 Indicates the current download status.
1: DWNLD_NOT_READY (download not ready)
2: DWNLD_PREPARING (download under preparation)
3: DWNLD_READY (ready for download)
4: DWNLD_OK (download complete)
5: DOWNLOADING (download underway)
6: CHECKSUM_FAIL (not used in this product)
7: FMS_DOWNLOAD_FAIL (failure during download)
8: DWNLD_INCOMPLETE (download error detected at restart)
9: VCR_FAIL (not used in this product)
10: OTHER (download error other than 6 and 7 detected)
3 Error Code 2 Indicates the error during a download and activation.
0: success, configuration retained (download successfully
completed)
32768 - 65535: Download error (See Table 4 for error codes.)
4 Download Domain Index 4 Indicates the index number of the domain for software downloading.
5 Download Domain Header
Index
4 Indicates the index number of the domain header to which the
download is performing.
6 Activated Domain Header
Index
4 Indicates the index numbers of the domain header currently
running.
7 Domain Name 8 Indicates the domain name. With this product, Domain Name
indicates the field device name.