Siemens SINUMERIK 840D sl Commissioning Manual page 827

;EnableDHCPD_SysNet=0
; Set synchronization of all DHCP servers in the
; system/TCU network (X120). Possible values are:
; OFF,
; or ON_LOW (low priority),
; or ON or ON_HIGH (normal priority),
; or ON_MASTER (highest priority),
; or ON_CLIENT_SYNC (starts DHCP client only, synchronization active),
; or ON_CLIENT_NO_SYNC (starts DHCP client only, synchronization
; inactive),
; ON_MASTER is used to make this machine deterministically the
; DHCP master server, but should be used only for one server
; in the network.
;SyncModeDHCPD_SysNet=ON
; This is the range of dynamic IPs given out by the DHCP server
; Defaults should be sensible
InternalDynRangeStart=192.168.214.10InternalDynRangeEnd=192.168.214.239
; If once a DHCP master was seen, the DHCP server waits this many seconds
; for the master to show up before trying to become the active server
;DHCPDNoMasterWait=120
; DNS domain name used for names in system/TCU network
; (default is "local" to conform with RFC)
InternalDNSDomain=local
; FixedDomain and FixedNameservers can be used to define a DNS domain and
; nameservers, if the DHCP/DNS server on system network is disabled
;FixedDomain=local
;FixedNameservers=192.168.214.1
; If DisableNATRouting is set to 1, the NCU won't forward
; from TCU or IBN net
; (X120 anad X127, resp.) to external net (X130).
NCU operating system (IM7)
Commissioning Manual, 03/2013, 6FC5397-1DP40-3BA1
Configuring the system
2.3 Configuration file "basesys.ini"
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