Siemens SINUMERIK Series Function Manual

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B3: Distributed systems - 840D sl only2.3 ExamplesExtended Functions122 Function Manual, 03/2013, 6FC5397-1BP40-3BA1Different systems of unitsDifferent systems of units are possible in spite of an active link group, as long as no crossNCU interpolation takes place. The system of units settings are made for a specific NCU inthe part program or synchronous action using G commands (G70, G71, G700, G710).ReferencesFunction Manual, Basic Functions; Velocities, Setpoint-Actual Value Systems, Closed-LoopControl (G2)2.3 Examples2.3.1 Link axisParameter example for two NCUs each with a link axisNCU1Machine data NoteGeneral link data:$MN_NCU_LINKNO = 1 Master NCU$MN_MM_NCU_LINK_MASK = 1 Set NCU-link active$MN_MM_SERVO_FIFO_SIZE = 3 Size of the data buffer between interpolation and positioncontrol$MN_MM_LINK_NUM_OF_MODULES = 2 Number of link modulesLogical machine axis image (LAI):$MN_AXCONF_LOGIC_MACHAX_TAB[0] = "AX1" Local machine axis$MN_AXCONF_LOGIC_MACHAX_TAB[1] = "AX2" Local machine axis$MN_AXCONF_LOGIC_MACHAX_TAB[2] = "NC2_AX3" Link axisMachine axis name, unique system-wide as NCU identifier:$MN_AXCONF_MACHAX_NAME_TAB[0] = "NC1_A1"$MN_AXCONF_MACHAX_NAME_TAB[1] = "NC1_A2"$MN_AXCONF_MACHAX_NAME_TAB[2] = "NC1_A3"Assignment of channel axis to machine axis:$MC_AXCONF_MACHAX_USED[0] = 1 1. Channel axis to the machine axis of LAI[0]$MC_AXCONF_MACHAX_USED[1] = 2 2. Channel axis to the machine axis of LAI[1]$MC_AXCONF_MACHAX_USED[2]=3 3. Channel axis to the machine axis of LAI[2]