ProSoft Technology MVI46-DNP - Manual (Page 80)

MVI46-DNP ♦ SLC Platform Reference
Master/Slave Communication Module
Page 80 of 143 ProSoft Technology, Inc.
August 23, 2007
258 or 9958 – SLC Binary Input Event (Slave Port)
If the SLC sends a command control code of 258 or 9958, the module places the
binary input event data in the block into the event buffer and alters the data
values for the points in the DNP binary input database. The format for the event
message is shown in the following table:
Word Offset in Block Data Fields Description
M0: .80 Command Code This field contains the value of 258 identifying the event block to the
module.
M0: .81 Event Count This field contains the number of events contained in the block. Valid
values for this field are 1 to 12.
M0: .82 Sequence Counter This field holds the sequence counter for each 258 block transfer.
This synchronizes and confirms receipt of the block by the module.
M0: .83 DNP Binary Input
Data point This is the data point in the DNP binary input database represented
by the event.
M0: .84 Month/Day/State Formatted: bits 0 to 4 = Day, bits 8 to 11 = Month, bit 15 = digital
state for point. All other bits are ignored.
M0: .85 Hour/Minute Formatted: bits 0 to 5 = Minutes, bits 8 to 12 = Hour. All other bits
are ignored.
M0: .86 Sec/Millisecond Formatted: bits 0 to 9 = Milliseconds, bits 10 to 15 = Seconds.
M0: .87 Year This is the four-digit year for the event.
88 to 92 Five words of data for Event #2.
93 to 98 Five words of data for Event #3.
98 to 102 Five words of data for Event #4.
103 to 107 Five words of data for Event #5.
108 to 112 Five words of data for Event #6.
113 to 117 Five words of data for Event #7.
118 to 122 Five words of data for Event #8.
123 to 127 Five words of data for Event #9.
128 to 132 Five words of data for Event #10.
133 to 137 Five words of data for Event #11.
138 to 142 Five words of data for Event #12.
Up to 12 events can be passed from the SLC to the module in each block. To
ensure that the block reached the module and was processed, the module sends
response data in the M0: file to the SLC. The format of the block is shown in the
following table.
Word Offset in Block Data Fields Description
M0: .80 Command Code This field contains a value of zero to indicate that the module
processed the command.
M0: .81 Acknowledge Value This field contains a value of 258 to indicate that the module
processed the command. This value is written over the event count
sent in the request message.
M0: .82 Event Count This field contains the number of events processed by the module.
M0: .83 Sequence Counter This field contains the sequence number corresponding to the last
event set processed.