GE RX3i User Manual page 96

TASK: For the PACSystems Ethernet module, Task must be set to 98 (62H).
For the PACSystems CPU embedded Ethernet interface, Task must be set to the value 65634 (10062H)
to address the CPU's Ethernet daughterboard.
FT Output: The FT output is set if the PLC CPU (rather than the Ethernet Interface) detects that the COMMREQ
fails. In this case, the other status indicators are not updated for this COMMREQ.
Read Ethernet Clock Status and Stratum COMMREQ (5001)
This COMMREQ is used to read the clock status and stratum from the specified Ethernet Interface.
If multiple Ethernet modules are enabled for TOD Clock Synchronization, the application logic must examine the
stratum at each Ethernet module to determine which Ethernet module to select.
Command Block for Read Ethernet Clock Status and Stratum COMMREQ
Word Offset
Word 1 Length of command data block.
Word 2 0
Word 3 For a list of memory type codes, see
"COMMREQ Status for the EGD
Commands" in Chapter 6.
Word 4 0-based
Word 5 0
Word 6 0
Word 7 5001
Word 8 For a list of memory type codes, see
"COMMREQ Status for the EGD
Commands" in Chapter 6.
Word 9 Any valid offset within memory type
specified in Word 8. This is a
1-based number.
The Ethernet clock status and stratum values from the locked time server (if any) are returned as two
consecutive words.
GFK-2224Q
Entering an incorrect TASK value may cause the Ethernet Interface to fail.
Value
Caution
Always 3.
Always 0 (Wait/No Wait mode request).
Memory type of the COMMREQ status word.
Offset of COMMREQ status word. For CRS word
values, refer to page 86.
Always 0.
Always 0.
Read Clock Status and Stratum command number.
Memory type of the storage location for the clock
status and stratum values retrieved from the
Ethernet interface.
Ethernet Clock Status and Stratum reference
address offset
January 2017
Chapter 5. Ethernet Global Data
Description
83