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EM58 • HS58 • HM58 POWERLINK
below). Additionally on the MN, the size of transmitted PReq messages (object
NMT_MNPReqPayloadLimitList_AU16
) is affected.
The limit is set up by the device firmware during system initialisation.
Default = 1490 (min. = 36, max. = 1490)
1F98-02 NMT_CycleTiming_REC.IsochrRxMaxPayload_U16
[Unsigned16, const]
It provides the device specific upper limit for payload data size expressed in
bytes of isochronous messages to be received by the device.
On all nodes, the sub-Index limits the size of the PRes frames received by the
node (object
1F8D-00 NMT_PResPayloadLimitList_AU16
). Additionally on
the CN, the size of the received PReq message (sub-Index
NMT_CycleTiming_REC.PreqActPayloadLimit_U16
, refer below) is affected.
The limit is set up by the device firmware during system initialisation.
Default = 1490 (min. = 36, max. = 1490)
1F98-03 NMT_CycleTiming_REC.PresMaxLatency_U32
[Unsigned32, const]
It provides the maximum time expressed in nanoseconds (ns), that is required by
the CN to respond to PReq.
The value is set up by the device firmware during system initialisation.
Default = 1000 (min. = 0, max. = 4294967295)
1F98-04 NMT_CycleTiming_REC.PreqActPayloadLimit_U16
[Unsigned16, rw]
It provides the configured PReq payload data slot size expressed in bytes
expected by the CN. The payload data slot size plus headers gives the size of the
PReq frame. The data slot can be filled by PDO data up to this limit.
Default = 36 (min. = 36, max. = 1490)
NOTE
This results in a fixed frame size regardless of the size of PDO data used.
1F98-05 NMT_CycleTiming_REC.PresActPayloadLimit_U16
[Unsigned16, rw]
It provides the configured PRes payload data slot size expressed in bytes sent by
the CN. The payload data slot size plus headers gives the size of the PRes frame.
The data slot can be filled by PDO data up to this limit.
Default = 36 (min. = 36, max. = 1490)
NOTE
This results in a fixed frame size regardless of the size of PDO data used.
MAN EM58_HS58_HM58 PL E 1.1.odt
POWERLINK interface
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