GE 345

1–40 345 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
ETHERNET INTERFACE CHAPTER 1: COMMUNICATIONS GUIDE
Timeouts while waiting for:
Data Link Confirm: ⊠ None □ Fixed □ Variable □ Configurable
Complete Appl. Fragment: ⊠ None □ Fixed □ Variable □ Configurable
Application Confirm: □ None ⊠ Fixed at 10 s □ Variable □ Configurable
Complete Appl. Response: ⊠ None □ Fixed at ___ □ Variable □ Configurable
Others:
Transmission Delay: No intentional delay
Need Time Interval: Configurable (default = 24 hrs.)
Select/Operate Arm Timeout: 10 s
Binary input change scanning period: 8 times per power system cycle
Analog input change scanning period: 500 ms
Counter change scanning period: 500 ms
Frozen counter event scanning period: 500 ms
Sends/Executes Control Operations:
WRITE Binary Outputs ⊠ Never □ Always □ Sometimes □Configurable
SELECT/OPERATE □ Never ⊠ Always □ Sometimes □ Configurable
DIRECT OPERATE □ Never ⊠Always
□ Sometimes □ Configurable
DIRECT OPERATE – NO ACK □ Never ⊠ Always □ Sometimes □ Configurable
Count > 1 ⊠ Never □ Always □ Sometimes □ Configurable
Pulse On □ Never □ Always ⊠ Sometimes □ Configurable
Pulse Off □ Never □ Always ⊠ Sometimes □ Configurable
Latch On □ Never □ Always ⊠ Sometimes □ Configurable
Latch Off □ Never □ Always ⊠ Sometimes □ Configurable
Queue ⊠ Never □ Always □ Sometimes □ Configurable
Clear Queue ⊠ Never □ Always □ Sometimes □ Configurable
Explanation of ‘Sometimes’: Object 12 points are mapped to Virtual Inputs. Both “Pulse On” and
“Latch On” operations perform the same function in the 345; that is, the appropriate Virtual Input is
put into the “On” state. The On/Off times and Count value are ignored. “Pulse Off” and “Latch Off”
operations put the appropriate Virtual Input into the “Off” state.
Reports Binary Input Change Events when no
specific variation requested:
Reports time-tagged Binary Input Change
Events when no specific variation
requested:
□ Never □ Never
⊠ Only time-tagged ⊠ Binary Input Change With Time
□ Only non-time-tagged □ Binary Input Change With Relative Time
□ Configurable □ Configurable (attach explanation)
Sends Unsolicited Responses: Sends Static Data in Unsolicited Responses:
□ Never ⊠ Never
□ Configurable □ When Device Restarts
□ Only certain objects □ When Status Flags Change
⊠ Sometimes No other options are permitted.
⊠ ENABLE/DISABLE unsolicited Function codes
supported
Explanation of ‘Sometimes’: It will be disabled for
RS-485 applications, since there is no collision
avoidance mechanism. For Ethernet communication
it will be available and it can be disabled or enabled
with the proper function code.
DNP 3.0 Device Profile