Instruction Manual

Lenze · E94AYCEP communication module (POWERLINK MN/CN) · Communication Manual · DMS 6.0 EN · 02/2014 · TD17 42
6 Commissioning
6.6 Optimising the POWERLINK communication
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
6.6 Optimising the POWERLINK communication
SDO bandwidth
The SDO channel width (C13075
/ C14075 is the size of the asynchronous channel used for
parameter setting and diagnostics. A higher value improves the transmission of large amounts of
data (e.g. parameter downloads) and at the same time reduces the number of possible nodes.
Maximum time for device search
During the device search, the Managing Node has to wait until all Controlled Nodes have been
found.
• Unless all Controlled Nodes are available in the defined POWERLINK cycle time, the
"EPL_BOOTUP_1" error message is generated. The Managing Node remains in this status.
• If the Managing Node has found all Controlled Nodes, it starts the network.
Due to machine or system-specific switch-on sequences, it may be required to adapt the following
POWERLINK objects:
•CN object 0x1F99: NMT_CNBasicEthernetTimeout_U32 (C13078
/ C14078)
•MN object 0x1F89: NMT_BootTime_REC (C13062
/ C14062)
 Note!
The channel bandwidth should only be increased if the network is below capacity limit.
 Note!
In order to avoid a too quick change to the Basic Ethernet Mode ( 29), the value of the
0x1F99 object (NMT_CNBasicEthernetTimeout_U32) must be higher than the value of
the 0x1F89 object (NMT_BootTime_REC) which is the case by default.
POWERLINK objects
( 136)