SATO GY412 Operator's Manual page 179

7.5 LOCAL AREA NETWORK (LAN) ETHERNET (cont'd)
2.
2-port connection / ENQ response mode (Protocol for the driver). After receiving the status request
command (ENQ:05H) from the host computer, the latest printer status is returned.
GY412 Operator Manual
Section 7: Interface Specifications
Page 7-15