Hmm. Wasn't familiar with that. Just did some reading.
Based on the MotionWorks document I found, this device does not expose general global memory via EtherNet/IP.
It optionally exposes selected global memory addresses as Modbus addresses (per YEA-SIA-IEC-4 § 1.9.2).
It optionally exposes selected global memory addresses as EtherNet/IP I/O adapter buffers (per YEA-SIA-IEC-4 § 1.9.4). Multiple buffers are available and can be enabled individually. A PLC scanner or the premium version of my EtherNet/IP Class 1 Communications Module is required to access these.
It optionally scans other EtherNet/IP I/O adapters (per YEA-SIA-IEC-4 § 1.9.5). My EtherNet/IP Class 1 Communications Module's base version can act as an I/O adapter for such scanners.
EtherNet/IP is a subset of the CIP specification ("Common Industrial Protocol") from ODVA (includes ControlNet and DeviceNet and variations). You must pay to become a subscriber to access it all (about 3000 pages of material in its latest version).