Allen-Bradley Logix5000 Reference Manual page 204

Chapter 4 Input/Output Instructions (MSG, GSV, SSV, IOT)
Attribute Data Type
NAKReceiveLimit SINT
NormalPollGroupSi INT
ze
PollingMode SINT
ReplyMessage DINT
Wait
SlavePollTimeout DINT
StationAddress INT
TokenHoldFactor SINT
TransmitRetries SINT
PendingACK DINT
Timeout
Pending SINT
Duplicate
Detection
Pending SINT
Embedded
ResponseEnable
PendingEnable SINT
StoreFwd
PendingENQ SINT
TransmitLimit
PendingEOT SINT
Suppression
PendingError SINT
Detection
PendingMaster SINT
Message
Transmit
PendingMax SINT
StationAddress
PendingNAK SINT
ReceiveLimit
PendingNormal INT
PollGroupSize
PendingPolling SINT
Mode
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Instruction Description
GSV The number of NAKs received in response to a message before stopping transmission (point-to-
point communication only). Valid value 0...127. Default is 3.
GSV Number of stations to poll in the normal poll node array after polling all the stations in the priority
poll node array (master only).
Valid value 0...255. Default is 0.
GSV Current polling mode (master only). Default setting is 1.
Value Meaning
0 Message-based, but don't allow slaves to initiate messages
1 Message-based, but allow slaves to initiate messages (default)
2 Standard, single-message transfer per node scan
3 Standard, multiple-message transfer per node scan
GSV The time (acting as a master) to wait after receiving an ACK before polling the slave for a
response (master only). Valid value 0...65,535. Delay in counts of 20 msec periods. The default is 5
periods (100 msec).
GSV The amount of time in msecs that the slave waits for the master to poll before the slave declares
that it is unable to transmit because the master is inactive (slave only). Valid value 0...32,767.
Delay in counts of 20 msec periods. The default is 3000 periods (1 minute).
GSV Current station address of the serial port. Valid value 0...254. Default is 0.
GSV Current value (1...4) of the maximum number of messages sent by this node before passing the
token on a DH-485 network. Default is 1.
GSV Number of times to resend a message without getting an acknowledgment (master and slave
only).
Valid value 0...127. Default is 3.
SSV Pending value for the ACKTimeout attribute.
SSV Pending value for the DuplicateDetection attribute.
SSV Pending value for the EmbeddedResponse attribute.
SSV Pending value for the EnableStoreFwd attribute.
SSV Pending value for the ENQTransmitLimit attribute.
SSV Pending value for the EOTSuppression attribute.
SSV Pending value for the ErrorDetection attribute.
SSV Pending value for the MasterMessageTransmit attribute.
SSV Pending value for the MaxStationAddress attribute.
SSV Pending value for the NAKReceiveLimit attribute.
SSV Pending value for the NormalPollGroupSize attribute.
SSV Pending value for the PollingMode attribute.
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011