AH500 Programming Manual 2.2.15 Refresh Time of Special Data Registers 2-82 Limited Special data register Refresh time to SR0~SR2 The register is refreshed when the program is executed in error. SR4 SR4 is refreshed when there is a grammar check error SR5~SR6 The register is refreshed when the program is downloaded to the PLC, or when the PLC is suppied with power and starts to run for the first time. SR8 SR8 is refreshed when there is a watchdog timer error. SR40~SR161 The register is refreshed when an error occurs. SR201~SR216 Users set the value and clear it. SR220~SR226 The register is refreshed every scan cycle.
SR227~SR308 The register is refreshed when the program is downloaded to the PLC. SR309~SR390 The register is refreshed when the status of the PLC changes. SR391~SR397 The register is refreshed every scan cycle. SR407 SR407 is refreshed every second. SR408 SR408 is refreshed whenever the instruction END is executed. SR409~SR410 Users set the value and clear it. SR411~SR416 The register is refreshed whenever the instruction END is executed. SR453 SR453 is refreshed when an error occurs. SR621~SR622 Users set the value and clear it. SR623~SR638 The register is refreshed when the instruction IMASK is executed. SR655~SR730 The register is refreshed when an error occurs in the I/○ module.
SR731 Once a low 24V voltage is detected, the status of the PLC changes and the register will also be refreshed. SR1000~SR1006 Users set the value and clear it. SR1007 Ethernet transmission speed SR1008 Ethernet transmission mode SR1100~SR1117 The register is refreshed every scan cycle. SR1118~SR1128 The register is refreshed when the parameter is downloaded to the PLC. SR1129~SR1130 The register is refreshed when the parameter is downloaded to the PLC, or when the PLC is supplied with power. SR1131~SR1141 The register is refreshed when the parameter is downloaded to the PLC.
SR1142~SR1143 The register is refreshed when the parameter is downloaded to the PLC, or when the PLC is supplied with power. SR1144~SR1154 The register is refreshed when the parameter is downloaded to the PLC. SR1155~SR1156 The register is refreshed when the parameter is downloaded to the PLC, or when the PLC is supplied with power. SR1157~SR1167 The register is refreshed when the parameter is downloaded to the PLC. SR1168~SR1169 The register is refreshed when the parameter is downloaded to the PLC, or when the PLC is supplied with power. SR1170~SR1180 The register is refreshed when the parameter is downloaded to the PLC.
SR1181~SR1182 The register is refreshed when the parameter is downloaded to the PLC, or when the PLC is supplied with power. SR1183~SR1193 The register is refreshed when the parameter is downloaded to the