Specifications

1-28 Command Descriptions Rev. A
Status Commands
The TM-U950/U950P supports the following status transmission commands. These commands can
be used to determine the status of the printer, paper sensors, and peripheral devices connected to the
printer.
Command Name
GS a Enable/disable automatic status back (ASB)
GS r Transmit status
DLE EOT Transmit real-time status
ESC u Transmit peripheral device status
ESC v Transmit paper sensor status
GS ENQ Transmit real-time printer status
DLE EOT BS Transmit real-time MICR status
GS a n
[Name] Enable/disable Automatic Status Back (ASB)
[Format] ASCII GS a n
Hex 1D 61 n
Decimal 29 97 n
[Range] 0 ≤
n
≤ 255
GS a n selects a status for ASB transmission. ASB is enabled if any status item is selected. The printer
automatically transmits a 4-byte status message whenever the status changes. Multiple status items
can be selected. When n=0, ASB is disabled. The default depends on the DIP switch settings. The
status items are selected using n as follows:
Bit Off/On Hex Decimal Status for ASB
0
Off 00 0
Drawer kick-out connector pin 3 status
disabled.
On 01 1
Drawer kick-out connector pin 3 status
enabled.
1
Off 00 0 On-line/off-line disabled.
On 02 2 On-line/off-line enabled.
2
Off 00 0 Error status disabled.
On 04 4 Error status enabled.
3
Off 00 0
Journal and receipt paper roll sensor status
disabled.
On 08 8
Journal and receipt paper roll sensor status
enabled.
4 — — — Undefined.