Getting Started
Part No.: 4417584_Rev12 Configuration Manual
CIU 888 3 - 85
Modbus Mode When host port is configured for Modbus RTU protocol,
Modbus Mode property indicates the operation mode
for the host port.
Note:
Refer to the Protocol Manual - CIU Emulation CIU
888 (Part No. 4417589) section 3.1.2, for more information.
Modbus Mapping
Select Entis Pro compliant, User specified, or CIU Plus
compliant.
Entis Pro compliant shall be selected if Entis Pro is con-
nected to this port. All data will be filled in predefined
positions.
CIU Plus compliant shall be selected if CIU Plus is con-
nected to this port. All data will be filled in predefined
positions.
Note: Refer to Protocol Manual - Modbus Host (Part No.
4417588) section 2.4, Input registers and Holding regis-
ters, for more information.
User specified shall be selected if a Modbus host like
DCS, PLC is connected to this port. Refer to
section 3.2.12 ‘Modbus settings’ for details how to con-
figure the Modbus map.
Absolute start address Enter start address for the User data area of CIU 888
Modbus map (default = 0).
For Example: Change the start address to 10000 if 80
tanks need to be supported with Entis pro compliant
modbus map.
Suppress moving status
This configuration indicates whether moving status is sup-
pressed (or) not in the CIU 888’s Modbus Tank record.
MSU mode Check to enable the option.
MSU mode is mainly for CIU emulation and is applica-
ble only when the protocol type is CIU-GPU.
Note:
Refer to the Protocol Manual - CIU Emulation CIU
888 (Part No. 4417589) for more information.
Host port GPU cache Check to enable the option.
When GPU cache mode is enabled, the CIU 888 gets
the data from cache (if available) and responds to GPU
host request.
Disable ACK in CIU-GPU When this option is selected, the CIU does not send
ACK characters to the GPU host system.
Prime compatible Mod-
bus output
Select to get the modus output in same way as CIU 880
Prime host port.
Default: Not Selected.
Suppress moving status To ignore moving status and present in Modbus output
Default: Not Selected
Disable ACK in CIU-GPU This configuration indicates whether Moving status is
suppressed (or) not in the CIU 888's Modbus Tank
record.
0 = Moving status not suppressed
1 = Moving status suppressed
Properties Description
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