Epson RC90 Manual page 258

2. Installation
NOTE
When connecting the OMRON's PLC and this option:

Use the following ESI files specialized for the OMRON's PLC.
On the OMRON's setting tool (Sysmac Studio), set as follows according to the
input/output size set for this option and the data type (USINT/REAL).
Example:
When [Input] is "256" bytes and [Output] is "256" bytes on this option, settings on the
OMRON's setting tool (Sysmac Studio) are as follows:
246
\EpsonRC70\Fieldbus\EtherCAT
EPSN_TSERIES_ECT_V2.3_for_OMRON_rev2.xml
USINT : Unsigned integer (1 byte)
REAL : floating point (4 bytes)
When "32" bytes is set for [Input Bytes],
select "RxPDO(USINT32byte)" or "RxPDO(REAL32byte)"
When "64" bytes is set for [Input Bytes],
select "RxPDO(USINT64byte)" or "RxPDO(REAL64byte)"
When "128" bytes is set for [Input Bytes],
select "RxPDO(USINT128byte)" or "RxPDO(REAL128byte)"
When "256" bytes is set for [Input Bytes],
select two of "RxPDO(USINT128byte/256byte)"
When "32" bytes is set for [Output Bytes],
select "TxPDO(USINT32byte)" or "TxPDO(REAL32byte)"
When "64" bytes is set for [Output Bytes],
select "TxPDO(USINT64byte)" or "TxPDO(REAL64byte)"
When "128" bytes is set for [Output Bytes],
select "TxPDO(USINT128byte)" or "TxPDO(REAL128byte)"
When "256" bytes is set for [Output Bytes],
select two of "TxPDO(USINT128byte/256byte)" or "TxPDO(REAL256byte)"
RC700 / RC90 Option Fieldbus I/O Rev.14