DL06 Micro PLC User Manual, 3rd Edition, Rev. E
5-276
Chapter 5: Standard RLL Instructions
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ECOM100 Enable DHCP (ECDHCPE) (IB-735)
ECOM100 Enable DHCP will tell the ECOM100 to obtain its TCP/IP setup from a DHCP
Server on a leading edge transition to the IBox.
The Workspace parameter is an internal, private register used by this IBox and MUST BE
UNIQUE in this one instruction and MUST NOT be used anywhere else in your program.
Either the Success or Error bit parameter will turn on once the command is complete. If there
is an error, the Error Code parameter will report an ECOM100 error code (less than 100), or
a PLC logic error (greater than 1000).
The “Enable DHCP” setting is stored in Flash-ROM in the ECOM100 and the execution of
this IBox will disable the ECOM100 module for at least a half second until it writes the Flash-
ROM. Therefore, it is HIGHLY RECOMMENDED that you only execute this IBox ONCE,
on first scan. Since it requires a LEADING edge to execute, use a NORMALLY CLOSED SP0
(STR NOT First Scan) to drive the power flow to the IBox.
In order for this ECOM100 IBox to function, you must turn ON dip switch 7 on the
ECOM100 circuit board.
ECDHCPE Parameters
• ECOM100#: this is a logical number associated with this specific ECOM100 module in the specified
slot. All other ECxxxx IBoxes that need to reference this ECOM100 module must reference this
logical number
• Timeout(sec): specifies a timeout period so that the instruction may have time to complete
• Workspace: specifies a V-memory location that will be used by the instruction
• Success: specifies a bit that will turn on once the request is completed successfully
• Error: specifies a bit that will turn on if the instruction is not successfully completed
• Error Code: specifies the location where the Error Code will be written
Parameter
DL06 Range
ECOM100#
K
K0-255
Timeout (sec)
K
K5-127
Workspace
V
See DL06 V-memory map - Data Words
Success
X,Y,C,GX,GY,B
See DL06 V-memory map
Error
X,Y,C,GX,GY,B
See DL06 V-memory map
Error Code
V
See DL06 V-memory map - Data Words
DS
Used
HPP
N/A
The IBox will be successful once the ECOM100
has received its TCP/IP settings from the DHCP
server. Since it is possible for the DHCP server to be
unavailable, a Timeout parameter is provided so that
the IBox can complete, but with an Error (Error Code
= 1004 decimal).
See also the ECOM100 IP Setup (ECIPSUP) IBox
717 to directly setup ALL of the TCP/IP parameters
in a single instruction - IP Address, Subnet Mask, and
Gateway Address.
