DL205 User Manual, 4th Edition, Rev. B
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Chapter 5: Intelligent Box (IBox) Instructions
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ECDHCPD Example
Rung 1: The ECOM100 Config IBox is responsible for coordination/interlocking of all
ECOM100 type IBoxes for one specific ECOM100 module. Tag the ECOM100 in slot 1 as
ECOM100# K0. All other ECxxxx IBoxes refer to this module # as K0. If you need to move
the module in the base to a different slot, then you only need to change this one IBox. V400
is used as a global result status register for the other ECxxxx IBoxes using this specific
ECOM100 module. V401 is used to coordinate/interlock the logic in all of the other ECxxxx
IBoxes using this specific ECOM100 module. V402-V502 is a common 130 byte buffer
available for use by the other ECxxxx IBoxes using this specific ECOM100 module.
NOTE
: An ECOM100 IBox instruction is used without a permissive contact. The top line will be identified in
BOLD italics
, and the instruction name and ID will be in
BOLD characters.
Rung 2: On the 2nd scan, disable DHCP in the ECOM100. DHCP is the same protocol
used by PCs for using a DHCP Server to automatically assign the ECOM100's IP Address,
Gateway Address, and Subnet Mask. Typically disabling DHCP is done by assigning a hard-
coded IP Address either in NetEdit or using one of the ECOM100 IP Setup IBoxes, but this
IBox allows you to disable DHCP in the ECOM100 using your ladder program. The
ECDHCPD is leading edge triggered, not power-flow driven (similar to a counter input leg).
The command to disable DHCP will be sent to the ECOM100 whenever the power flow
into the IBox goes from OFF to ON. If successful, turn on C100. If there is a failure, turn on
C101. If it fails, you can look at V2000 for the specific error code.
ECOM100
Config
ECOM100
IB-710
ECOM100#
Slot
Status
Workspace
Msg Buffer (65 WORDs)
K0
K1
V400
V401
V402-502
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