SECTION 3
Preparing for Communications
• Write ID
(1) The CIDRW Controller is in IDLE. The host device requests the CIDRW Controller change its oper-
ational status to MAINTENANCE.
(2) The CIDRW Controller changes to MAINTENANCE and replies that it has changed state.
(3) The host device sends a Write ID Request message to the CIDRW Controller for Head 1. The
CIDRW Head 1 writes ID, and the CIDRW Controller returns the ID to the host devices.
• Write Data
The host device sends a Write Data Request message to the CIDRW Controller for Head 1 and
DataSeg S02. The CIDRW Head 1 writes the data, and the CIDRW Controller returns the results to the
host device.
When SECS Is Not Used
CIDRW System
72
User's Manual
CIDRW Controller
CIDRW Controller
Host
S18, F13 SubSystem Command Request
Target ID="01"
CPVAL="MT"
S18, F14 SubSystem Command Acknowledge
SSACK="NO"
S18, F11 Write ID
Target ID="01"
MID="ABC"
S18, F12 Write ID Data
SSACK="NO"
Host
S18, F7 Write ID Request
Target ID="01"
Dataseg="S02"
Data="xxxxxx"
S18, F8 Write Data Acknowledge
SSACK="NO"