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Product Description XI/ON - Eaton Automation

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<strong>XI</strong>/<strong>ON</strong>: Gateways for Modbus TCP 9 Appendix<br />

Control bit Explanations<br />

SET_DO1 If CTRL_DO1 = 1 and the physical output DO1 is set<br />

to indicate the value SET_DO1, DO1 can be set and<br />

reset directly with SET_DO1.<br />

DO1 can be set for this function via the process<br />

output (MODE_DO1 = 00 and LOAD_DO_PARAM<br />

“0“ → “1“). The output DO2 can also be set before<br />

commissioning via the separate parameter data.<br />

The default setting for DO1 is to display the value of<br />

SET_DO1.<br />

RES_STS “0“ → “1“ Initiate resetting of status bits. Status bits<br />

STS_ND, STS_UFLW, STS_OFLW, STS_CMP2,<br />

STS_CMP1, STS_SYN (process input) are reset.<br />

Bit RES_STS_A = 1 (process input) acknowledges<br />

that the reset command has been received.<br />

RES_STS can now be reset to 0.<br />

CTRL_SYN Release synchronization<br />

1: “0“ → “1“ (rising edge) at the physical DI input<br />

enables the counter value to be set (synchronized)<br />

once/periodically to the load value.<br />

SW_GATE “0“ → “1“: Counting is started (release).<br />

“1“ → “0“: Counting is stopped.<br />

The starting and stopping of the counting operation<br />

with a data bit is implemented with a so-called “SW<br />

gate”. The HW gate is also provided in addition for<br />

stopping and starting the counting operation via the<br />

DI hardware input. If this function is configured a<br />

positive signal must be present at this input in order<br />

to activate the SW gate (AND logic operation).<br />

LOAD_<br />

DO_PARAM<br />

Parameter definition of the DO1 physical output and<br />

the virtualA DO2 output<br />

“0“ → “1“: DO1 and DO2 can indicate the status of<br />

data bit SET_DO1 and SET_DO2 or comparison<br />

results. The latest telegram (MODE_DO1 and<br />

MODE_DO2) indicates the function required for DO1<br />

and DO2.<br />

M001973-01, 07/2007 187

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